1.	Solve sin x cos x - cos x = 0 for principal values of x. Express solutions in degrees.
		A.	30°, 90°	B.	150°, 90°
		C.	60°, 90°	D.	30°, 60°
		Hint
	2.	Solve sin2 x - sin x + 1 = cos2 x for 0 x < 2.
		A.	0, , ,	B.	0, , ,
		C.	0, , ,	D.	0, ,
		Hint
	3.	Solve 2 cos + 1 < 0 for 0 < 2.
		A.	0 < or < < 2	B.	< < 2
		C.	< <	D.	< <
		Hint
	4.	Solve sec2 x = - 2 for -90° < x < 90°.
		A.	-60°, 60°	B.	-30°, 30°
		C.	0°	D.	60°
		Hint
	5.	Solve for 0 x < 2.
		A.		B.
		C.		D.
		Hint