Question

prove that sin(x+y)/sin(x-y)=tanx + tany/tanx-tany​

Answer 1

Step-by-step explanation:

LHS=

sin(x+y)/sin(x-y)

=sinx.cosy+cosx.siny/sinx.cosy-cosx.siny

Therefore divide numerator and denominator by cosx+cosy.....

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