How do you convert $(-2, -pi/2)$ into rectangular coordinates?

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Answer 1 · 2018-07-09T05:57:38

$color(crimson)((x,y) = (0, -1)$

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$"Given " (r,theta) = (-2, -pi/2)$

$x = r cos theta = -2 cos (-(pi/2)) = 0 " as " cos (-pi/2) = 0$

$y = r sin theta = -2 * sin (-pi/2) = 2 " as " sin (-pi/2) = -1$

How do you convert (-2, -pi/2)(-2, -pi/2) into rectangular coordinates?