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1 7. If A and B are positive acute angles and cos A = 13 then show 14' 7, cos B = that A- B = 60°.

1 7. If A and B are positive acute angles and cos A = 13 then show 14' 7, cos B = that A- B = 60°.

Trigonometry (11th Edition)
Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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7. If A and B are positive acute angles and cos A = 1 cos B = 13 then show that A- B = 60°. 14'
Transcribed Image Text:7. If A and B are positive acute angles and cos A = 1 cos B = 13 then show that A- B = 60°. 14'
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