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Given rhat deri ve formula cos (A+B) = COSA COSB COSCA -B) Sina sinB, for Sin (A+B) (Henr: cofancrion idennires part@) T- (A +8) =(-A) -B. use

Given rhat deri ve formula cos (A+B) = COSA COSB COSCA -B) Sina sinB, for Sin (A+B) (Henr: cofancrion idennires part@) T- (A +8) =(-A) -B. use

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section: Chapter Questions
Problem 55RE
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3 a b, 4, and 5 in picture
Given rhat Cos CA+B) = COSA COSB - sinA SinB. deri ve formula for COSCA -B) identi re s. 6 sin(A+B) (Henr: cofuncrion 꼭-(A+8) -(폭-^)-B use part☺) If tan A = 1, and find tanCA+B) cos CIos°) in two ways Find he addirion formula: Use coscios) cos (60°+ 45° )
Transcribed Image Text:Given rhat Cos CA+B) = COSA COSB - sinA SinB. deri ve formula for COSCA -B) identi re s. 6 sin(A+B) (Henr: cofuncrion 꼭-(A+8) -(폭-^)-B use part☺) If tan A = 1, and find tanCA+B) cos CIos°) in two ways Find he addirion formula: Use coscios) cos (60°+ 45° )
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