•5. if A₁: A Cosa, A2= A COSB A3=A cos & and A = Aj + A ₂ √ + Azk then cosa + cosp + (0 5² 8 = 1

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.2: Trigonometric Equations
Problem 55E
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5. jf A.:A Cos aA2:Acos B
A3 A Cosdand A- Aj+A2J+A3K
then cosa +cosp+cos8=1
Transcribed Image Text:5. jf A.:A Cos aA2:Acos B A3 A Cosdand A- Aj+A2J+A3K then cosa +cosp+cos8=1
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