Not to Scale b Co! = In the diagram OAB is a triangle with vector OA=a and OB=b such that|a|=5, | b|=8 and a-b=7. What is the value of a. b? (A) 10 (B) 20 (C) 30 (D) 40
Not to Scale b Co! = In the diagram OAB is a triangle with vector OA=a and OB=b such that|a|=5, | b|=8 and a-b=7. What is the value of a. b? (A) 10 (B) 20 (C) 30 (D) 40
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:B
25
Not to Scale
co! =
0
A
In the diagram OAB is a triangle with vector OA=a and OB = b such that a = 5, b=8
and a-b=7. What is the value of a.b?
(A)
10
(B)
20
(C)
30
(D) 40
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