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

Prove that sin(x+y)/sin(x-y)=tanx+tany/tanx-tany
Prove that sin(A+B)/sin(A-B)=tanA+tanB/tanA-tanB
Proof of sin(x+y)/sin(x-y)=tanx+tany/tanx-tany

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[Foumi-zn]

Thank you so much for your video it was so helpful ❤