Question

The measure θ of an angle in standard position is given. Find the exact values of cosθ and sinθ for each angle measure.

2π / 3 radians

Answer 1

`\cos \theta=\cos (2\pi)/(3)=-\cos (\pi)/(3)=\boxed{-(1)/(2)}\\\\\\\sin \theta=\sin (2\pi)/(3)=\sin (\pi)/(3)=\boxed{(\sqrt 3)/(2)}`