{ "query": { "display": "cartesian to polar $$\\left(-3,\\:3\\right)$$", "symbolab_question": "POLAR#polar (-3,3)" }, "solution": { "level": "PERFORMED", "subject": "Pre Calculus", "topic": "Polar Coordinates", "subTopic": "Polar", "default": "(3\\sqrt{2},-\\frac{π}{4}+π)" }, "steps": { "type": "interim", "title": "Convert $$\\left(-3,\\:3\\right)\\:$$to polar coordinates:$${\\quad}\\left(3\\sqrt{2},\\:-\\frac{π}{4}+π\\right)$$", "steps": [ { "type": "definition", "title": "Definition", "text": "To convert Cartesian coordinates $$\\left(x,\\:y\\right)\\:$$to Polar coordinates $$\\left(r,\\:\\theta\\right)\\:$$apply:<br/>$$r=\\sqrt{x^2+y^2}\\quad\\theta=\\arctan\\left(\\frac{y}{x}\\right)$$", "secondary": [ "$$x=-3$$", "$$y=3$$" ] }, { "type": "step", "primary": "$$r=\\sqrt{x^2+y^2}$$", "result": "r=\\sqrt{\\left(-3\\right)^{2}+3^{2}}" }, { "type": "interim", "title": "$$\\sqrt{\\left(-3\\right)^{2}+3^{2}}=3\\sqrt{2}$$", "input": "\\sqrt{\\left(-3\\right)^{2}+3^{2}}", "steps": [ { "type": "step", "primary": "Apply exponent rule: $$\\left(-a\\right)^{n}=a^{n},\\:$$if $$n$$ is even", "secondary": [ "$$\\left(-3\\right)^{2}=3^{2}$$" ], "result": "=\\sqrt{3^{2}+3^{2}}" }, { "type": "step", "primary": "Add similar elements: $$3^{2}+3^{2}=3^{2}\\cdot\\:2$$", "result": "=\\sqrt{3^{2}\\cdot\\:2}" }, { "type": "step", "primary": "Apply radical rule: $$\\sqrt[n]{ab}=\\sqrt[n]{a}\\sqrt[n]{b},\\:\\quad$$ assuming $$a\\ge0,\\:b\\ge0$$", "result": "=\\sqrt{2}\\sqrt{3^{2}}", "meta": { "practiceLink": "/practice/radicals-practice", "practiceTopic": "Radical Rules" } }, { "type": "step", "primary": "Apply radical rule: $$\\sqrt[n]{a^n}=a,\\:\\quad$$ assuming $$a\\ge0$$", "secondary": [ "$$\\sqrt{3^{2}}=3$$" ], "result": "=3\\sqrt{2}", "meta": { "practiceLink": "/practice/radicals-practice", "practiceTopic": "Radical Rules" } } ], "meta": { "solvingClass": "Solver", "interimType": "Solver", "gptData": "pG0PljGlka7rWtIVHz2xymbOTBTIQkBEGSNjyYYsjjDErT97kX84sZPuiUzCW6s77dtxLd9UeyppCvogsL4v8yLJ2ByjV2B6lkdmE58Y4nV1g99dC9fj9sg0EHzBIRDRLuUEMbbuQFr8kwxGdbhppGRLd2VwIqlBNByF6663syRo7Rb0aWDRAW3k10Exv6WlpQ4Iy9xOucpy+65FdjKX57CI2sSeA74029n2yo277ZU=" } }, { "type": "step", "result": "r=3\\sqrt{2}" }, { "type": "step", "primary": "$$\\theta=\\arctan\\left(\\frac{y}{x}\\right)$$", "result": "θ=\\arctan\\left(\\frac{3}{-3}\\right)" }, { "type": "interim", "title": "Adjust $$\\theta$$ based on the quadrant of the point $$\\left(-3,\\:3\\right)$$", "result": "θ=\\arctan\\left(\\frac{3}{-3}\\right)+π", "steps": [ { "type": "definition", "title": "Point location", "text": "If x>0, y>0, then the point is in quadrant I<br/>If x<0, y>0, then the point is in quadrant II<br/>If x<0, and y<0, then the point is in quadrant III<br/>If x>0, and y<0, then the point is in quadrant IV", "secondary": [ "$$\\left(-3,\\:3\\right)\\:$$is in quadrant II" ] }, { "type": "step", "primary": "If in quadrant II or III, add $$\\pi$$ to $$\\theta$$<br/>If in quadrant IV, add $$2\\pi$$ to $$\\theta$$", "result": "θ=\\arctan\\left(\\frac{3}{-3}\\right)+π" } ], "meta": { "interimType": "Cartesian To Polar Adjust Theta 1Eq" } }, { "type": "interim", "title": "$$\\arctan\\left(\\frac{3}{-3}\\right)+π=-\\frac{π}{4}+π$$", "input": "\\arctan\\left(\\frac{3}{-3}\\right)+π", "steps": [ { "type": "interim", "title": "$$\\arctan\\left(\\frac{3}{-3}\\right)=-\\frac{π}{4}$$", "input": "\\arctan\\left(\\frac{3}{-3}\\right)", "steps": [ { "type": "interim", "title": "$$\\frac{3}{-3}=-1$$", "input": "\\frac{3}{-3}", "steps": [ { "type": "step", "primary": "Apply the fraction rule: $$\\frac{a}{-b}=-\\frac{a}{b}$$", "result": "=-\\frac{3}{3}" }, { "type": "step", "primary": "Apply rule $$\\frac{a}{a}=1$$", "result": "=-1" } ], "meta": { "solvingClass": "Solver", "interimType": "Solver", "gptData": "pG0PljGlka7rWtIVHz2xymbOTBTIQkBEGSNjyYYsjjDErT97kX84sZPuiUzCW6s7avm7NR+1XBb2Ze1j/AIp8y061ljBSPJeENOw2efoSWuixCfF7o9L2hRx9Shm0jmvo3oe/oyhMy2+1TQhDBd2f5M40Tt1ZvmoPuqxY8upJKQkt3WiGR7ZaCaXvz77bMjS" } }, { "type": "step", "result": "=\\arctan\\left(-1\\right)" }, { "type": "step", "primary": "Use the following property: $$\\arctan\\left(-x\\right)=-\\arctan\\left(x\\right)$$", "secondary": [ "$$\\arctan\\left(-1\\right)=-\\arctan\\left(1\\right)$$" ], "result": "=-\\arctan\\left(1\\right)" }, { "type": "interim", "title": "Use the following trivial identity:$${\\quad}\\arctan\\left(1\\right)=\\frac{π}{4}$$", "input": "\\arctan\\left(1\\right)", "steps": [ { "type": "step", "primary": "$$\\begin{array}{|c|c|c|}\\hline x&\\arctan(x)&\\arctan(x)\\\\\\hline 0&0&0^{\\circ}\\\\\\hline \\frac{\\sqrt{3}}{3}&\\frac{\\pi}{6}&30^{\\circ}\\\\\\hline 1&\\frac{\\pi}{4}&45^{\\circ}\\\\\\hline \\sqrt{3}&\\frac{\\pi}{3}&60^{\\circ}\\\\\\hline \\end{array}$$" }, { "type": "step", "result": "=\\frac{π}{4}" } ], "meta": { "interimType": "Trig Trivial Angle Value Title 0Eq" } }, { "type": "step", "result": "=-\\frac{π}{4}" } ], "meta": { "solvingClass": "Solver", "interimType": "Solver", "gptData": "pG0PljGlka7rWtIVHz2xymbOTBTIQkBEGSNjyYYsjjDErT97kX84sZPuiUzCW6s7iGvFWxodO1NUsa8/NPZQswXmnGOss18wPn7MMk3t13EDnzlbPZjyKgy1eUCFsLd5C0Mhm8BpOdg5ThZH78RphVO1T0snFOPqKXL+S6MxVml7jiFdHr0SVom/kicRvwMrQ64KsuGyo9bS6utpJJpTBF+VlAtW4e5GbXcVxB3X2iQ=" } }, { "type": "step", "result": "=-\\frac{π}{4}+π" } ], "meta": { "solvingClass": "Solver", "interimType": "Solver", "gptData": "pG0PljGlka7rWtIVHz2xymbOTBTIQkBEGSNjyYYsjjDErT97kX84sZPuiUzCW6s7iGvFWxodO1NUsa8/NPZQswEjC4zpnZXWd4v2wU3H6FwgJ/ZZA32ZInFBpDtxBfiKmWiTEpQjat3SO7/l2m58l3DewuNRqMoWEjVZFAQL7imgFJyBsDxkarmODbO7ahsZGd8ROQgGNDwxIxmWNpCsx+VILv5O4PTM/IFQWcFdOplpOMhL5TeSzbb0jLHXKnLC" } }, { "type": "step", "result": "θ=-\\frac{π}{4}+π" }, { "type": "step", "primary": "The polar coordinates of $$\\left(-3,\\:3\\right)$$", "result": "\\left(3\\sqrt{2},\\:-\\frac{π}{4}+π\\right)" } ] } }