How do you convert the polar coordinate $(7,(2pi)/3)$ into rectangular coordinates?

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Answer 1 · 2016-12-02T17:48:27

$(-3.5,6.06)$

To convert from polar coordinate to rectangular coordinate we use the formula $x=rcos theta, y=rsin theta$

Hence,

$x=7 cos ((2pi)/3)=-3.5$

$y=7 sin ((2pi)/3)~~6.06$

So the point is approximately $(-3.5,6.06)$

How do you convert the polar coordinate (7,(2pi)/3)(7,(2pi)/3) into rectangular coordinates?