1.	Let and . Find .
		A.		B.
		C.		D.
		Hint
	2.	Let . Find .
		A.		B.
		C.		D.
		Hint
	3.	A vector that has a magnitude of one is called a _____.
		A.	unit vector	B.	scalar
		C.	resultant	D.	magnitude
		Hint
	4.	Write as a sum of unit vectors for A(3, -1) and B(8, 6).
		A.		B.
		C.		D.
		Hint
	5.	Let C = (4, 17), D. = (-11, 2). Write as a sum of unit vectors.
		A.		B.
		C.		D.
		Hint