1.	Use the unit circle to find sec (-180°).
		A.	0	B.	1
		C.	undefined	D.	-1
		Hint
	2.	Use the unit circle to find the value of cos 120°.
		A.		B.
		C.	-2	D.
		Hint
	3.	Find the value of for an angle in standard position if a point with coordinates (-12, 5) lies on its terminal side.
		A.		B.
		C.		D.
		Hint
	4.	Suppose is an angle in standard position whose terminal side lies in Quadrant II. If , find
		A.		B.
		C.		D.
		Hint
	5.	The terminal side of one angle in standard position contains the point with coordinates (3, -2). The terminal side of another angle in standard position contains the point with coordinates (-3, 2). Compare the tangents of these angles.
		A.	They are not equal.	B.	One does not exist.
		C.	One is twice the other.	D.	They are equal.
		Hint