Question

Prove That :
tan²A + cot²A = sec²A • cosec²A -2 ( class 10)
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Answer 1

Answer:

(since, tan^2+1=sec^2 and cosec^2=cot^2+1)

sec^2-1+cosec^2-1= LHS

LHS=sec^2+cosec^2-2

therefore, LHS=RHS

Hence, proved