Prove that 1 by secA - 1 + 1 by secA+1 is equal to 2cosecA*cotA
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Answer:LHS
1/secA-1 +1/secA-1
= SecA+1 +(secA-1)
_______________
Sec^A-1
=2secA. 2secA. 1
_____ = ______ _____
Tan^A. Tan A. TanA
= cosecA. CotA.
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