Practice Test 10

An angle of $3\pi/4$ is drawn in standard position on the unit circle. Using the 45-45-90 triangle and quadrant signs, which coordinates represent the terminal point $R$ (where $R=(\cos\theta,\sin\theta)$)?

On the unit circle, an angle of $\pi/6$ is drawn in standard position. Using the 30-60-90 triangle scaled so the hypotenuse (radius) is 1, which coordinates represent the terminal point $P$ on the unit circle (where $P=(\cos\theta,\sin\theta)$)?