Trigonometric and Polar Functions

What are the coordinates of the center of the unit circle?

Which of the following is the radian equivalent of 60 degrees?

An angle measures $\frac{7\pi}{4}$ radians. What is its coterminal angle in the range of 0 to $2\pi$?

What angle is formed after 2.5 revolutions counterclockwise from 0 radians?

What is the value of sin($\frac{\pi}{6}$)?

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

A point P on the unit circle has coordinates (0, -1). What is the angle in radians?

In which quadrant does an angle of 210° lie?

In Quadrant II, which trigonometric function is positive?

If sine is negative and cosine is positive, in which quadrant does the angle lie?