Question
For any angle $\theta$ in standard position, let $P=(a, b)$ be any point on the terminal side of $\theta$ that is also on the circle $x^{2}+y^{2}=r^{2} .$ Then $\sin \theta=$ _______ and $\cos \theta=$ _______.
Step 1
The coordinates of any point P on the circle $x^{2}+y^{2}=r^{2}$ can be represented as $(r\cos\theta, r\sin\theta)$, where $\theta$ is the angle in standard position. Show more…
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