11. If Sin(x+a) = 2Cos(x-α); prove that: tan x= 2-tana 1-2 tana

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 21E
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11. If Sin(x+α)=2Cos(x-a); prove that: tan x=-
2-tana
1-2 tana
Transcribed Image Text:11. If Sin(x+α)=2Cos(x-a); prove that: tan x=- 2-tana 1-2 tana
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