Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.2: Trigonometric Functions Of Angles
Problem 18E
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Question
![Apply the law of cosines to the triangle in the accompanying
figure to derive the formula for cos (A – B).
B](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb1f06f06-153b-4d2f-adf8-dcc6bc9a81b4%2Fa749675b-53b3-47b4-bfe7-c740aa07c916%2Frf4h7v4_processed.png&w=3840&q=75)
Transcribed Image Text:Apply the law of cosines to the triangle in the accompanying
figure to derive the formula for cos (A – B).
B
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