1.	Complete the identity of _________.
		A.	cot x	B.	sin x
		C.	tan x	D.	cos x
		Hint
	2.	Complete the identity csc x (cos x - sec x) = ________.
		A.	-tan x	B.	cot x
		C.	-cot x	D.	tan x
		Hint
	3.	Find a numerical value of one trigonometric function of x if
		A.		B.
		C.		D.
		Hint
	4.	Complete the identity = _______.
		A.	tan x	B.	sec x
		C.	-cos x	D.	sin x
		Hint
	5.	Find a numerical value of one trigonometric function of x if sin x (tan x + cot x) = 2.
		A.	cos x =	B.	sec x =
		C.	sin x =	D.	csc x =
		Hint