Math, asked by mohit17032003, 1 year ago

Express cosA in terms of cotA

Answers

Answered by SukhdeepSingh

3

I think this is ur answer

but check please

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Answered by AmanRajSinghania

6

sec^2A = 1 + tan^2A
1/cos^2A = 1 + 1/cot^2A
= (cot^2A + 1)/ cot^2A
cos^2A = cot^2A / (cot^2A + 1)
cosA = cotA/ (cot^2A + 1)^1/2

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