SAT Math: Geometry and Trigonometry

What is the radius of the unit circle?

What is the value of $cos(\frac{2\pi}{3})$?

Evaluate the expression: $sin(\frac{\pi}{6}) + cos(\frac{\pi}{4}) + tan(\frac{\pi}{3})$

A point on the unit circle has coordinates $(\frac{\sqrt{3}}{2}, \frac{1}{2})$. What is the value of $tan(θ)$ for the corresponding angle $θ$?

In which quadrant are both tangent and cosine negative?

What is the value of $sin(60°)$?

If a point on the unit circle has coordinates $(\frac{\sqrt{2}}{2}, y)$ and lies in the first quadrant, what is the value of $y$?

Which of the following transformations would NOT preserve the properties of the unit circle?

A point on the unit circle has coordinates $(\frac{1}{2}, \frac{\sqrt{3}}{2})$. Which of the following angles could correspond to this point?

If $sin(θ) = \frac{1}{\sqrt{5}}$ and $θ$ is in the second quadrant, find the value of $cos(θ)$.