{
"query": {
"display": "$$\\sin\\left(2x-20\\right)=-\\cos\\left(3x+50\\right)$$",
"symbolab_question": "EQUATION#\\sin(2x-20)=-\\cos(3x+50)"
},
"solution": {
"level": "PERFORMED",
"subject": "Trigonometry",
"topic": "Trig Equations",
"subTopic": "Trig Equations",
"default": "x=2πn+\\frac{π}{2}-70,x=-\\frac{4πn+60+π}{10}",
"degrees": "x=-3920.70456…^{\\circ }+360^{\\circ }n,x=-361.77467…^{\\circ }-72^{\\circ }n",
"meta": {
"showVerify": true
}
},
"steps": {
"type": "interim",
"title": "$$\\sin\\left(2x-20\\right)=-\\cos\\left(3x+50\\right){\\quad:\\quad}x=2πn+\\frac{π}{2}-70,\\:x=-\\frac{4πn+60+π}{10}$$",
"input": "\\sin\\left(2x-20\\right)=-\\cos\\left(3x+50\\right)",
"steps": [
{
"type": "step",
"primary": "Multiply by $$-1$$",
"result": "-\\sin\\left(2x-20\\right)=\\cos\\left(3x+50\\right)"
},
{
"type": "interim",
"title": "Rewrite using trig identities",
"input": "-\\sin\\left(2x-20\\right)=\\cos\\left(3x+50\\right)",
"result": "\\sin\\left(-\\left(2x-20\\right)\\right)=\\sin\\left(\\frac{π}{2}-\\left(3x+50\\right)\\right)",
"steps": [
{
"type": "step",
"primary": "Use the following identity: $$-\\sin\\left(x\\right)=\\sin\\left(-x\\right)$$",
"result": "\\sin\\left(-\\left(2x-20\\right)\\right)=\\cos\\left(3x+50\\right)"
},
{
"type": "step",
"primary": "Use the following identity: $$\\cos\\left(x\\right)=\\sin\\left(\\frac{π}{2}-x\\right)$$",
"result": "\\sin\\left(-\\left(2x-20\\right)\\right)=\\sin\\left(\\frac{π}{2}-\\left(3x+50\\right)\\right)"
}
],
"meta": {
"interimType": "Trig Rewrite Using Trig identities 0Eq",
"gptData": "pG0PljGlka7rWtIVHz2xymbOTBTIQkBEGSNjyYYsjjDErT97kX84sZPuiUzCW6s7SHDS6kJwJIV4q/3HJvK1hgojcsWaAj7I4KDJZ+q/zjaH0xHbffF9yQV56c+XOmsUEsLZPw0Vm9MD6l9/kB1c91f2VE3iaVir/MjR2DERcZ0+92eGLSzeVn4MnusSJN6pU9xzI0Qe+kmlPzCUw2pJ5x6r1lQlCQUbUfH+IeviT/r4rA4RYMYJMwO6oSEMR1mNo3oe/oyhMy2+1TQhDBd2fwFKHQ6RGVQjiWOq5H13FZKmjkCCyn9Od0fQyCWmlpOzHOrX7UzWNirFLb1W4rOczQ=="
}
},
{
"type": "interim",
"title": "Apply trig inverse properties",
"input": "\\sin\\left(-\\left(2x-20\\right)\\right)=\\sin\\left(\\frac{π}{2}-\\left(3x+50\\right)\\right)",
"result": "-\\left(2x-20\\right)=\\frac{π}{2}-\\left(3x+50\\right)+2πn,\\:-\\left(2x-20\\right)=π-\\left(\\frac{π}{2}-\\left(3x+50\\right)\\right)+2πn",
"steps": [
{
"type": "step",
"primary": "$$\\sin\\left(x\\right)=\\sin\\left(y\\right)\\quad\\Rightarrow\\quad\\:x=y+2{\\pi}n,\\:x=\\pi-y+2{\\pi}n$$",
"result": "-\\left(2x-20\\right)=\\frac{π}{2}-\\left(3x+50\\right)+2πn,\\:-\\left(2x-20\\right)=π-\\left(\\frac{π}{2}-\\left(3x+50\\right)\\right)+2πn"
}
],
"meta": {
"interimType": "Trig Apply Inverse Props 0Eq"
}
},
{
"type": "interim",
"title": "$$-\\left(2x-20\\right)=\\frac{π}{2}-\\left(3x+50\\right)+2πn{\\quad:\\quad}x=2πn+\\frac{π}{2}-70$$",
"input": "-\\left(2x-20\\right)=\\frac{π}{2}-\\left(3x+50\\right)+2πn",
"steps": [
{
"type": "interim",
"title": "Expand $$-\\left(2x-20\\right):{\\quad}-2x+20$$",
"input": "-\\left(2x-20\\right)",
"steps": [
{
"type": "step",
"primary": "Distribute parentheses",
"result": "=-\\left(2x\\right)-\\left(-20\\right)"
},
{
"type": "step",
"primary": "Apply minus-plus rules",
"secondary": [
"$$-\\left(-a\\right)=a,\\:\\:\\:-\\left(a\\right)=-a$$"
],
"result": "=-2x+20"
}
],
"meta": {
"solvingClass": "Solver",
"interimType": "Generic Expand Specific 1Eq",
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}
},
{
"type": "interim",
"title": "Expand $$\\frac{π}{2}-\\left(3x+50\\right)+2πn:{\\quad}\\frac{π}{2}-3x-50+2πn$$",
"input": "\\frac{π}{2}-\\left(3x+50\\right)+2πn",
"steps": [
{
"type": "interim",
"title": "$$-\\left(3x+50\\right):{\\quad}-3x-50$$",
"input": "-\\left(3x+50\\right)",
"result": "=\\frac{π}{2}-3x-50+2πn",
"steps": [
{
"type": "step",
"primary": "Distribute parentheses",
"result": "=-\\left(3x\\right)-\\left(50\\right)"
},
{
"type": "step",
"primary": "Apply minus-plus rules",
"secondary": [
"$$+\\left(-a\\right)=-a$$"
],
"result": "=-3x-50"
}
],
"meta": {
"interimType": "N/A"
}
}
],
"meta": {
"solvingClass": "Solver",
"interimType": "Generic Expand Specific 1Eq",
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}
},
{
"type": "step",
"result": "-2x+20=\\frac{π}{2}-3x-50+2πn"
},
{
"type": "interim",
"title": "Move $$20\\:$$to the right side",
"input": "-2x+20=\\frac{π}{2}-3x-50+2πn",
"result": "-2x=-3x+2πn+\\frac{π}{2}-70",
"steps": [
{
"type": "step",
"primary": "Subtract $$20$$ from both sides",
"result": "-2x+20-20=\\frac{π}{2}-3x-50+2πn-20"
},
{
"type": "interim",
"title": "Simplify",
"input": "-2x+20-20=\\frac{π}{2}-3x-50+2πn-20",
"result": "-2x=-3x+2πn+\\frac{π}{2}-70",
"steps": [
{
"type": "interim",
"title": "Simplify $$-2x+20-20:{\\quad}-2x$$",
"input": "-2x+20-20",
"steps": [
{
"type": "step",
"primary": "Add similar elements: $$20-20=0$$"
},
{
"type": "step",
"result": "=-2x"
}
],
"meta": {
"interimType": "Generic Simplify Specific 1Eq"
}
},
{
"type": "interim",
"title": "Simplify $$\\frac{π}{2}-3x-50+2πn-20:{\\quad}-3x+2πn+\\frac{π}{2}-70$$",
"input": "\\frac{π}{2}-3x-50+2πn-20",
"steps": [
{
"type": "step",
"primary": "Group like terms",
"result": "=-3x+2πn+\\frac{π}{2}-50-20"
},
{
"type": "step",
"primary": "Subtract the numbers: $$-50-20=-70$$",
"result": "=-3x+2πn+\\frac{π}{2}-70"
}
],
"meta": {
"solvingClass": "Solver",
"interimType": "Generic Simplify Specific 1Eq",
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}
},
{
"type": "step",
"result": "-2x=-3x+2πn+\\frac{π}{2}-70"
}
],
"meta": {
"interimType": "Generic Simplify 0Eq"
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}
],
"meta": {
"interimType": "Move to the Right Title 1Eq",
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}
},
{
"type": "interim",
"title": "Move $$3x\\:$$to the left side",
"input": "-2x=-3x+2πn+\\frac{π}{2}-70",
"result": "x=2πn+\\frac{π}{2}-70",
"steps": [
{
"type": "step",
"primary": "Add $$3x$$ to both sides",
"result": "-2x+3x=-3x+2πn+\\frac{π}{2}-70+3x"
},
{
"type": "step",
"primary": "Simplify",
"result": "x=2πn+\\frac{π}{2}-70"
}
],
"meta": {
"interimType": "Move to the Left Title 1Eq",
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}
}
],
"meta": {
"solvingClass": "Equations",
"interimType": "Equations"
}
},
{
"type": "interim",
"title": "$$-\\left(2x-20\\right)=π-\\left(\\frac{π}{2}-\\left(3x+50\\right)\\right)+2πn{\\quad:\\quad}x=-\\frac{4πn+60+π}{10}$$",
"input": "-\\left(2x-20\\right)=π-\\left(\\frac{π}{2}-\\left(3x+50\\right)\\right)+2πn",
"steps": [
{
"type": "interim",
"title": "Expand $$-\\left(2x-20\\right):{\\quad}-2x+20$$",
"input": "-\\left(2x-20\\right)",
"steps": [
{
"type": "step",
"primary": "Distribute parentheses",
"result": "=-\\left(2x\\right)-\\left(-20\\right)"
},
{
"type": "step",
"primary": "Apply minus-plus rules",
"secondary": [
"$$-\\left(-a\\right)=a,\\:\\:\\:-\\left(a\\right)=-a$$"
],
"result": "=-2x+20"
}
],
"meta": {
"solvingClass": "Solver",
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}
},
{
"type": "interim",
"title": "Expand $$π-\\left(\\frac{π}{2}-\\left(3x+50\\right)\\right)+2πn:{\\quad}π-\\frac{π}{2}+3x+50+2πn$$",
"input": "π-\\left(\\frac{π}{2}-\\left(3x+50\\right)\\right)+2πn",
"steps": [
{
"type": "interim",
"title": "$$-\\left(3x+50\\right):{\\quad}-3x-50$$",
"input": "-\\left(3x+50\\right)",
"steps": [
{
"type": "step",
"primary": "Distribute parentheses",
"result": "=-\\left(3x\\right)-\\left(50\\right)"
},
{
"type": "step",
"primary": "Apply minus-plus rules",
"secondary": [
"$$+\\left(-a\\right)=-a$$"
],
"result": "=-3x-50"
}
],
"meta": {
"interimType": "N/A"
}
},
{
"type": "step",
"result": "=π-\\left(-3x+\\frac{π}{2}-50\\right)+2πn"
},
{
"type": "interim",
"title": "$$-\\left(\\frac{π}{2}-3x-50\\right):{\\quad}-\\frac{π}{2}+3x+50$$",
"input": "-\\left(\\frac{π}{2}-3x-50\\right)",
"result": "=π-\\frac{π}{2}+3x+50+2πn",
"steps": [
{
"type": "step",
"primary": "Distribute parentheses",
"result": "=-\\left(\\frac{π}{2}\\right)-\\left(-3x\\right)-\\left(-50\\right)"
},
{
"type": "step",
"primary": "Apply minus-plus rules",
"secondary": [
"$$-\\left(-a\\right)=a,\\:\\:\\:-\\left(a\\right)=-a$$"
],
"result": "=-\\frac{π}{2}+3x+50"
}
],
"meta": {
"interimType": "N/A"
}
}
],
"meta": {
"solvingClass": "Solver",
"interimType": "Generic Expand Specific 1Eq",
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},
{
"type": "step",
"result": "-2x+20=π-\\frac{π}{2}+3x+50+2πn"
},
{
"type": "interim",
"title": "Move $$20\\:$$to the right side",
"input": "-2x+20=π-\\frac{π}{2}+3x+50+2πn",
"result": "-2x=3x+2πn+30+π-\\frac{π}{2}",
"steps": [
{
"type": "step",
"primary": "Subtract $$20$$ from both sides",
"result": "-2x+20-20=π-\\frac{π}{2}+3x+50+2πn-20"
},
{
"type": "interim",
"title": "Simplify",
"input": "-2x+20-20=π-\\frac{π}{2}+3x+50+2πn-20",
"result": "-2x=3x+2πn+30+π-\\frac{π}{2}",
"steps": [
{
"type": "interim",
"title": "Simplify $$-2x+20-20:{\\quad}-2x$$",
"input": "-2x+20-20",
"steps": [
{
"type": "step",
"primary": "Add similar elements: $$20-20=0$$"
},
{
"type": "step",
"result": "=-2x"
}
],
"meta": {
"interimType": "Generic Simplify Specific 1Eq"
}
},
{
"type": "interim",
"title": "Simplify $$π-\\frac{π}{2}+3x+50+2πn-20:{\\quad}3x+2πn+30+π-\\frac{π}{2}$$",
"input": "π-\\frac{π}{2}+3x+50+2πn-20",
"steps": [
{
"type": "step",
"primary": "Group like terms",
"result": "=3x+π+2πn-\\frac{π}{2}+50-20"
},
{
"type": "step",
"primary": "Add/Subtract the numbers: $$50-20=30$$",
"result": "=3x+2πn+30+π-\\frac{π}{2}"
}
],
"meta": {
"solvingClass": "Solver",
"interimType": "Generic Simplify Specific 1Eq",
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}
},
{
"type": "step",
"result": "-2x=3x+2πn+30+π-\\frac{π}{2}"
}
],
"meta": {
"interimType": "Generic Simplify 0Eq"
}
}
],
"meta": {
"interimType": "Move to the Right Title 1Eq",
"gptData": "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"
}
},
{
"type": "interim",
"title": "Move $$3x\\:$$to the left side",
"input": "-2x=3x+2πn+30+π-\\frac{π}{2}",
"result": "-5x=2πn+30+π-\\frac{π}{2}",
"steps": [
{
"type": "step",
"primary": "Subtract $$3x$$ from both sides",
"result": "-2x-3x=3x+2πn+30+π-\\frac{π}{2}-3x"
},
{
"type": "step",
"primary": "Simplify",
"result": "-5x=2πn+30+π-\\frac{π}{2}"
}
],
"meta": {
"interimType": "Move to the Left Title 1Eq",
"gptData": "pG0PljGlka7rWtIVHz2xymbOTBTIQkBEGSNjyYYsjjDErT97kX84sZPuiUzCW6s7RluGULp3PbeHYAm8DpBGfPUK0Bf149Kyagz806f4PTVY6bwfxsFXqNfqyezH8YiYSDj4+97zAezt9PwT9bHGu69Equxs5h2+pg6Zx58ufQKAqomnF50Zs2t8jA+QD47lMqZoVC7f1Q8ujn0uIpGrSiSIB+5rZzjN9rZB584s2S28VmH5b+IMwMCjiIIju0VR3CmpoWEZ6Xx6oiIfKYR080iu613x5IyBSj4elHIXAAwF+/jU5cejOvmDrkqvguX1zFCnzKTYR2+JO9+HPqu47+jt0hWgBMP6WmJL3zDfowuIejL9cTIvq532d8wlmk5jjc4uAgN5eg1K/8JxeGgebgXXSkuG634JZ0lja1+WrR3WmK64en8Tg8KsMmLPqU8u4bsSxBVtCKzG8EljRiQ7YwXXSkuG634JZ0lja1+WrR12yJZbv9JNC1KQm2KBNDOOTgtV8UeTlOjbrwiqNnnwotJhpA9/uD9yR/Ph6qaWFfU5KyHsrQ3tO6RK1e6/Vd+sla1GEiD7QoTLIeMLN4jcH9BqKkduvWeZ1aldjNufzcHKzgkJ9epXAVEg8k0yhQGHethhpyrQTda4SvUcZm/KsO/Ab3cSzX/gB4rYp7EKXevaWePPEqfUesyCUnC0AMtrqiWfjnO2oiny8qhYyTA7lfBgeR+YcdPN7cleTcuOImk="
}
},
{
"type": "interim",
"title": "Divide both sides by $$-5$$",
"input": "-5x=2πn+30+π-\\frac{π}{2}",
"result": "x=-\\frac{4πn+60+π}{10}",
"steps": [
{
"type": "step",
"primary": "Divide both sides by $$-5$$",
"result": "\\frac{-5x}{-5}=\\frac{2πn}{-5}+\\frac{30}{-5}+\\frac{π}{-5}-\\frac{\\frac{π}{2}}{-5}"
},
{
"type": "interim",
"title": "Simplify",
"input": "\\frac{-5x}{-5}=\\frac{2πn}{-5}+\\frac{30}{-5}+\\frac{π}{-5}-\\frac{\\frac{π}{2}}{-5}",
"result": "x=-\\frac{4πn+60+π}{10}",
"steps": [
{
"type": "interim",
"title": "Simplify $$\\frac{-5x}{-5}:{\\quad}x$$",
"input": "\\frac{-5x}{-5}",
"steps": [
{
"type": "step",
"primary": "Apply the fraction rule: $$\\frac{-a}{-b}=\\frac{a}{b}$$",
"result": "=\\frac{5x}{5}"
},
{
"type": "step",
"primary": "Divide the numbers: $$\\frac{5}{5}=1$$",
"result": "=x"
}
],
"meta": {
"solvingClass": "Solver",
"interimType": "Generic Simplify Specific 1Eq",
"gptData": "pG0PljGlka7rWtIVHz2xymbOTBTIQkBEGSNjyYYsjjDErT97kX84sZPuiUzCW6s7YoJhQWmEu9VNJo28CPisH3yRHuGw7+tM5METTDj6vVEed1oZgJr3Rrt+25B4RF18ZEt3ZXAiqUE0HIXrrrezJHZKl2mV4AlztiApTAFigz0dWZAkmURnuRS8qK/QQHXTialcV/dI5TH4fXyp+ncwuA=="
}
},
{
"type": "interim",
"title": "Simplify $$\\frac{2πn}{-5}+\\frac{30}{-5}+\\frac{π}{-5}-\\frac{\\frac{π}{2}}{-5}:{\\quad}-\\frac{4πn+60+π}{10}$$",
"input": "\\frac{2πn}{-5}+\\frac{30}{-5}+\\frac{π}{-5}-\\frac{\\frac{π}{2}}{-5}",
"steps": [
{
"type": "step",
"primary": "Apply rule $$\\frac{a}{c}\\pm\\frac{b}{c}=\\frac{a\\pm\\:b}{c}$$",
"result": "=\\frac{2πn+30+π-\\frac{π}{2}}{-5}"
},
{
"type": "step",
"primary": "Apply the fraction rule: $$\\frac{a}{-b}=-\\frac{a}{b}$$",
"result": "=-\\frac{2πn+30+π-\\frac{π}{2}}{5}"
},
{
"type": "interim",
"title": "Join $$2πn+30+π-\\frac{π}{2}:{\\quad}\\frac{4πn+60+π}{2}$$",
"input": "2πn+30+π-\\frac{π}{2}",
"result": "=-\\frac{\\frac{4πn+π+60}{2}}{5}",
"steps": [
{
"type": "step",
"primary": "Convert element to fraction: $$2πn=\\frac{2πn2}{2},\\:30=\\frac{30\\cdot\\:2}{2},\\:π=\\frac{π2}{2}$$",
"result": "=\\frac{2πn\\cdot\\:2}{2}+\\frac{30\\cdot\\:2}{2}+\\frac{π2}{2}-\\frac{π}{2}"
},
{
"type": "step",
"primary": "Since the denominators are equal, combine the fractions: $$\\frac{a}{c}\\pm\\frac{b}{c}=\\frac{a\\pm\\:b}{c}$$",
"result": "=\\frac{2πn\\cdot\\:2+30\\cdot\\:2+π2-π}{2}"
},
{
"type": "interim",
"title": "$$2πn\\cdot\\:2+30\\cdot\\:2+π2-π=4πn+60+π$$",
"input": "2πn\\cdot\\:2+30\\cdot\\:2+π2-π",
"steps": [
{
"type": "step",
"primary": "Add similar elements: $$2π-π=π$$",
"result": "=2\\cdot\\:2πn+30\\cdot\\:2+π"
},
{
"type": "step",
"primary": "Multiply the numbers: $$2\\cdot\\:2=4$$",
"result": "=4πn+30\\cdot\\:2+π"
},
{
"type": "step",
"primary": "Multiply the numbers: $$30\\cdot\\:2=60$$",
"result": "=4πn+60+π"
}
],
"meta": {
"solvingClass": "Solver",
"interimType": "Solver",
"gptData": "pG0PljGlka7rWtIVHz2xymbOTBTIQkBEGSNjyYYsjjDErT97kX84sZPuiUzCW6s722rs/UtTzhh0/11VX7Cb4za0QEVIYcJLdlK0K9gYhcoAlilG71elit3w1IBbYN0Ps5Hw/UF82SQGVYL13IS1/57uIz3Z8/mqbWPHAPICx4ePCZX1LCCWZV5U81JkKqM1KUH6sOnLYua+pSwvkC9idOpmOjaNI0KtlNPxhy2Xu2KwiNrEngO+NNvZ9sqNu+2V"
}
},
{
"type": "step",
"result": "=\\frac{4πn+60+π}{2}"
}
],
"meta": {
"interimType": "Algebraic Manipulation Join Concise Title 1Eq"
}
},
{
"type": "interim",
"title": "Simplify $$\\frac{\\frac{4πn+60+π}{2}}{5}:{\\quad}\\frac{4πn+60+π}{10}$$",
"input": "\\frac{\\frac{4πn+60+π}{2}}{5}",
"result": "=-\\frac{4πn+π+60}{10}",
"steps": [
{
"type": "step",
"primary": "Apply the fraction rule: $$\\frac{\\frac{b}{c}}{a}=\\frac{b}{c\\:\\cdot\\:a}$$",
"result": "=\\frac{4πn+60+π}{2\\cdot\\:5}"
},
{
"type": "step",
"primary": "Multiply the numbers: $$2\\cdot\\:5=10$$",
"result": "=\\frac{4πn+60+π}{10}"
}
],
"meta": {
"interimType": "Algebraic Manipulation Simplify Title 1Eq"
}
},
{
"type": "step",
"result": "=-\\frac{4πn+60+π}{10}"
}
],
"meta": {
"solvingClass": "Solver",
"interimType": "Generic Simplify Specific 1Eq",
"gptData": "pG0PljGlka7rWtIVHz2xymbOTBTIQkBEGSNjyYYsjjDErT97kX84sZPuiUzCW6s7rWv8Qj96y2UCfi+p66aEe1gIkpdE5/64bYWapz6cM7dZFOWuRXr3JVDlRoxQBmIvHfGrQDRPH5zDTayBXmxDB2mrLkFle8FWLfuQyEISvpzNGoPE9TME3q+OPmgkv2RQ7oquj6i4tgpnYLqarsJ0mzWSdAsOj360xGHh5tgKGlejeh7+jKEzLb7VNCEMF3Z/bMzoTd+5nEXVeQoBhpFcIItzBkaB4G63Z3M0jm6w6pIPAyzzOHoQmsUtIXrXy0/YZxokaFbbtb0U7x2wO/zsmDCsio/RtQQ3RD3LfUwLffU3w/cRYUuMMCCSlLNtLuWN"
}
},
{
"type": "step",
"result": "x=-\\frac{4πn+60+π}{10}"
}
],
"meta": {
"interimType": "Generic Simplify 0Eq"
}
}
],
"meta": {
"interimType": "Divide Both Sides Specific 1Eq",
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}
},
{
"type": "step",
"result": "x=2πn+\\frac{π}{2}-70,\\:x=-\\frac{4πn+60+π}{10}"
}
],
"meta": {
"solvingClass": "Equations",
"interimType": "Equations"
}
},
{
"type": "step",
"result": "x=2πn+\\frac{π}{2}-70,\\:x=-\\frac{4πn+60+π}{10}"
}
],
"meta": {
"solvingClass": "Trig Equations",
"practiceLink": "/practice/trigonometry-practice#area=main&subtopic=Trig%20Equations",
"practiceTopic": "Trig Equations"
}
},
"plot_output": {
"meta": {
"plotInfo": {
"variable": "x",
"plotRequest": "\\sin(2x-20)+\\cos(3x+50)"
},
"showViewLarger": true
}
},
"meta": {
"showVerify": true
}
}
Solution
Solution
+1
Degrees
Solution steps
Multiply by
Rewrite using trig identities
Use the following identity:
Use the following identity:
Apply trig inverse properties
Expand
Distribute parentheses
Apply minus-plus rules
Expand
Distribute parentheses
Apply minus-plus rules
Move to the right side
Subtract from both sides
Simplify
Simplify
Add similar elements:
Simplify
Group like terms
Subtract the numbers:
Move to the left side
Add to both sides
Simplify
Expand
Distribute parentheses
Apply minus-plus rules
Expand
Distribute parentheses
Apply minus-plus rules
Distribute parentheses
Apply minus-plus rules
Move to the right side
Subtract from both sides
Simplify
Simplify
Add similar elements:
Simplify
Group like terms
Add/Subtract the numbers:
Move to the left side
Subtract from both sides
Simplify
Divide both sides by
Divide both sides by
Simplify
Simplify
Apply the fraction rule:
Divide the numbers:
Simplify
Apply rule
Apply the fraction rule:
Join
Convert element to fraction:
Since the denominators are equal, combine the fractions:
Add similar elements:
Multiply the numbers:
Multiply the numbers:
Simplify
Apply the fraction rule:
Multiply the numbers:
Graph
Popular Examples
Frequently Asked Questions (FAQ)
What is the general solution for sin(2x-20)=-cos(3x+50) ?
The general solution for sin(2x-20)=-cos(3x+50) is x=2pin+pi/2-70,x=-(4pin+60+pi)/(10)