Why does cos θ, which normally equals x, become 0 when you evaluate this function for π/r radians?(adsbygoogle = window.adsbygoogle || []).push({});

(π/r means pi over r radians)

Why does cos θ, which normally equals x, become 0 when you evaluate this function for π/r radians?

It says that the point on the circle for this question is (0,1) so zero = x and y = 1 here.

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# Homework Help: Why does cos θ, which normally equals x, become 0 when you evaluate this function

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