Math, asked by Kuloth, 1 year ago

Prove that : Cos2B - cos2A / sin2B + sin2A = tan(A - B)

Answers

Answered by Anshul201

41

cosC-cosD=2sin(C+D/2)sin(D-C/2)
sinC+sinD=2sin(C+D/2)cos(C-D/2)

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Answered by kshravan

3

Step-by-step explanation:

cos 2b - cos 2a / sin 2b + sin 2a

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