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

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Answer 1 · 2016-11-30T23:04:08

$(0.67,-2.92)$

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

Hence,

$x=3cos (-(3pi)/7)~~0.67$

$y=3 sin (-(3pi)/7)~~-2.92$

So the point is approximately $(0.67,-2.92)$

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