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prove
1/(seca-tana)-1/cosa=1/cosa-1/(seca+tana)
Hello krishna !
Make a bit change in the question ...shift the cos term in RHS ..
1/(seca-tana) + 1/(seca+tana) = 2/cosa
LHS
1/(seca-tana) + 1/(seca+tana)
= 2seca / (sec^2a - tan^2a)
= 2.seca or 2/cosa ( hence proved ...)
Regards
Yagya
askiitians_expert
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