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Get Answers to all your Questions
If cos A + sin A =2 cos A , then prove that cos A - sin A = 2 sin A
Answers (1)
cos A + sin A =2 cos A
sinA=2cosA-cosA
sinA=cosA-----------------------------------1
cos A - sin A = 2 sin A
Putting the value of sinA in the equation
cosA-cosA= 0
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