pls answer to this question. frnds. i. will mark you brainliest.......
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by rationalizing the denominator of lhs,
√1+ cosa/1-cosa ×1+cosa/1+cosa
√(1+cosa) ^2/1-cos^2a
1+cosa /sina ( 1/sina=coseca and cosa/sina =cota)
coseca+cota
hence proved
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