{
"query": {
"display": "$$\\sec\\left(θ\\right)+2=0$$",
"symbolab_question": "EQUATION#\\sec(θ)+2=0"
},
"solution": {
"level": "PERFORMED",
"subject": "Trigonometry",
"topic": "Trig Equations",
"subTopic": "Trig Equations",
"default": "θ=\\frac{2π}{3}+2πn,θ=\\frac{4π}{3}+2πn",
"degrees": "θ=120^{\\circ }+360^{\\circ }n,θ=240^{\\circ }+360^{\\circ }n",
"meta": {
"showVerify": true
}
},
"steps": {
"type": "interim",
"title": "$$\\sec\\left(θ\\right)+2=0{\\quad:\\quad}θ=\\frac{2π}{3}+2πn,\\:θ=\\frac{4π}{3}+2πn$$",
"input": "\\sec\\left(θ\\right)+2=0",
"steps": [
{
"type": "interim",
"title": "Move $$2\\:$$to the right side",
"input": "\\sec\\left(θ\\right)+2=0",
"result": "\\sec\\left(θ\\right)=-2",
"steps": [
{
"type": "step",
"primary": "Subtract $$2$$ from both sides",
"result": "\\sec\\left(θ\\right)+2-2=0-2"
},
{
"type": "step",
"primary": "Simplify",
"result": "\\sec\\left(θ\\right)=-2"
}
],
"meta": {
"interimType": "Move to the Right Title 1Eq",
"gptData": "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"
}
},
{
"type": "interim",
"title": "General solutions for $$\\sec\\left(θ\\right)=-2$$",
"result": "θ=\\frac{2π}{3}+2πn,\\:θ=\\frac{4π}{3}+2πn",
"steps": [
{
"type": "step",
"primary": "$$\\sec\\left(x\\right)$$ periodicity table with $$2πn$$ cycle:<br/>$$\\begin{array}{|c|c|c|c|}\\hline x&\\sec(x)&x&\\sec(x)\\\\\\hline 0&1&π&-1\\\\\\hline \\frac{π}{6}&\\frac{2\\sqrt{3}}{3}&\\frac{7π}{6}&-\\frac{2\\sqrt{3}}{3}\\\\\\hline \\frac{π}{4}&\\sqrt{2}&\\frac{5π}{4}&-\\sqrt{2}\\\\\\hline \\frac{π}{3}&2&\\frac{4π}{3}&-2\\\\\\hline \\frac{π}{2}&\\mathrm{Undefined}&\\frac{3π}{2}&\\mathrm{Undefined}\\\\\\hline \\frac{2π}{3}&-2&\\frac{5π}{3}&2\\\\\\hline \\frac{3π}{4}&-\\sqrt{2}&\\frac{7π}{4}&\\sqrt{2}\\\\\\hline \\frac{5π}{6}&-\\frac{2\\sqrt{3}}{3}&\\frac{11π}{6}&\\frac{2\\sqrt{3}}{3}\\\\\\hline \\end{array}$$"
},
{
"type": "step",
"result": "θ=\\frac{2π}{3}+2πn,\\:θ=\\frac{4π}{3}+2πn"
}
],
"meta": {
"interimType": "Trig General Solutions sec 1Eq"
}
}
],
"meta": {
"solvingClass": "Trig Equations",
"practiceLink": "/practice/trigonometry-practice#area=main&subtopic=Trig%20Equations",
"practiceTopic": "Trig Equations"
}
},
"plot_output": {
"meta": {
"plotInfo": {
"variable": "θ",
"plotRequest": "\\sec(θ)+2"
},
"showViewLarger": true
}
},
"meta": {
"showVerify": true
}
}
Solution
Solution
+1
Degrees
Solution steps
Move to the right side
Subtract from both sides
Simplify
General solutions for
periodicity table with cycle:
Graph
Popular Examples
Frequently Asked Questions (FAQ)
What is the general solution for sec(θ)+2=0 ?
The general solution for sec(θ)+2=0 is θ=(2pi)/3+2pin,θ=(4pi)/3+2pin