Answer to Question #347026 in Analytic Geometry for Busi

Question #347026

Convert (3–√,−1) into polar coordinates (r,θ) so that r≥0 and 0≤θ<2π


1
Expert's answer
2022-06-02T08:43:00-0400
r2=(3)2+(1)2=4r^2=(-\sqrt{3})^2+(-1)^2=4




r0=>r=4=2r\ge0=>r=\sqrt{4}=2

Quadrant III


tanθ=13=13\tan \theta=\dfrac{-1}{-\sqrt{3}}=\dfrac{1}{\sqrt{3}}

θ=π+tan1(13)=7π6\theta=\pi+\tan^{-1}(\dfrac{1}{\sqrt{3}})=\dfrac{7\pi}{6}

(2,7π6)(2, \dfrac{7\pi}{6})


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