1+sinx/1-sinx =tan^2(45°+x/2)
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when we multiply right hand side with 0
we get
l.h.s=0
similarly with right hand side when you multiply with zero
we get right hand side as zero
when we compare lhs and RHS we get both of them as equal
and hence the proof
we get
l.h.s=0
similarly with right hand side when you multiply with zero
we get right hand side as zero
when we compare lhs and RHS we get both of them as equal
and hence the proof
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