Show that if u+v and u – v are orthogonal, then the vectors u and v must have the same length. If 0 is the angle between vectors a and b, show that proją b proj, a = (a. b) cos²0

Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter3: Additional Topics In Trigonometry
Section3.4: Vectors And Dot Products
Problem 5ECP
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Show that if u+v and u – v are orthogonal, then the vectors u and v must have the same length.
If 0 is the angle between vectors a and b, show that
proją b proj, a =
(a. b) cos 0
Transcribed Image Text:Show that if u+v and u – v are orthogonal, then the vectors u and v must have the same length. If 0 is the angle between vectors a and b, show that proją b proj, a = (a. b) cos 0
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