11. What is the vector which is orthogonal both to 9i + 9j and 9i + 9k? B. 81i – 81j – 81k A. 81i + 81j – 81k C. 81i – 81j + 81k D. 81i + 81j + 81k

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter8: Applications Of Trigonometry
Section8.4: The Dot Product
Problem 12E
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REE - Apr. 2013
11. What is the vector which is orthogonal both to 9i + 9j and 9i + 9k?
A. 81i + 81j – 81k
B. 81i – 81j – 81k
C. 81i - 81j + 81k
D. 81i + 81j + 81k
Transcribed Image Text:REE - Apr. 2013 11. What is the vector which is orthogonal both to 9i + 9j and 9i + 9k? A. 81i + 81j – 81k B. 81i – 81j – 81k C. 81i - 81j + 81k D. 81i + 81j + 81k
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