Question

prove that :

sin x + y /sin x- y = tax + tan y / tanx - tany

Answer 1

as lhs=rhs

hence proved

hope it helps

Answer 2

Step-by-step explanation:

sin(x+y)=sinxcosy + cosyxsiny

sin(x-y)=sinxcosy-cosxsiny

Now

sin(x+y)/sin(x-y)=sinxcosy+cosxsiny/sinxcosy-cosxsiny

Dividing numerator and denominatory cos x cos y and solving we get

tanx + tany/tanx - tany

Hope this will help u