1.Find the reference angle, the quadrant of the terminal side, and the sine and cosine of225.

Enter the exact answers.

It's reference angle is

sin(225)=

cos(225)=

2.Find the reference angle, the quadrant of the terminal side, and the sine and cosine of43pi?.

Enter the exact answers.

For the number?, either choose?from the drop-down menu (under ?)or type in Pi (with a capital P).

Its reference angle is

sin(43pi?)=

cos(43pi?)=

3.A child enters a carousel that takes one minute to revolve once around. The child enters at the point (0,1), that is, on the due north position. Assume the carousel revolves counterclockwise.

What are the coordinates of the child after 75 seconds?

Enter the exact answer as a point, (a,b).

4.Use the point on the unit circle to find the value of the three trigonometric functions below.