Math, asked by chaudharypreeti365, 4 months ago


Prove that:
a) cot4A - 1 = cosec4A - 2 cosec2A​

Answers

Answered by havockarthik30
5

Answer:

R.H.S=cot^4A-1=(cosec^2A-1)^2-1=cosec^4a-2cosec^2a+1-1=cose^4A-2cosec^2A

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