1. Given the following vectors: u=(1, 2, -4) and v=(2, 3, 5) Find: a) u.v b) u.u c) (u.v) v

Algebra and Trigonometry (MindTap Course List)
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Chapter9: Vectors In Two And Three Dimensions
Section9.CR: Chapter Review
Problem 3CC
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1. Given the following vectors: u=(1, 2, -4) and
v=(2, 3, 5)
Find:
a) u.v
b) u.u
c) (u.v) v
d) angle between u and v
e) unit vector
2. Suppose that B =(2, 2, 1) and makes 30° with A
and A• B = 6. What is the magnitude of A?
3. What is the angle between A and B if A•B = 0
4. Find (u+v)• (2u – v) given that u•u = 4
4 • v = -5 and v•v =10
5. Determine if u and v are orthogonal
u = (cos 0, sin 0,-1); v= (sin 0,-cos 0,0)
%3D
Transcribed Image Text:1. Given the following vectors: u=(1, 2, -4) and v=(2, 3, 5) Find: a) u.v b) u.u c) (u.v) v d) angle between u and v e) unit vector 2. Suppose that B =(2, 2, 1) and makes 30° with A and A• B = 6. What is the magnitude of A? 3. What is the angle between A and B if A•B = 0 4. Find (u+v)• (2u – v) given that u•u = 4 4 • v = -5 and v•v =10 5. Determine if u and v are orthogonal u = (cos 0, sin 0,-1); v= (sin 0,-cos 0,0) %3D
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