answer plz i need it
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first take the rhs
now rationalise it
we have (1-cosa)²/1-cos²a
also 1-cos²a=sin²a
this term can be written as
((1/sina)-cosa/sina)²
i.e (coseca-cota)²which is equal to the LHS thus proved
now rationalise it
we have (1-cosa)²/1-cos²a
also 1-cos²a=sin²a
this term can be written as
((1/sina)-cosa/sina)²
i.e (coseca-cota)²which is equal to the LHS thus proved
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