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.	30°, 60°	D.	60°, 90°
		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 cos x - 1 = 0 for all real values of x.
		A.	+ 2k, +2k	B.	+ k
		C.	+2k, + 2k	D.	+2k, + 2k
		Hint
	4.	Solve sec2 x = - 2 for -90° < x < 90°.
		A.	-30°, 30°	B.	60°
		C.	-60°, 60°	D.	0°
		Hint
	5.	Solve for 0 x < 2.
		A.		B.
		C.		D.
		Hint