In any triangle. if(a^2-b^2)/(a^2+b^2)=(...

In any triangle. `if(a^2-b^2)/(a^2+b^2)=("sin"(A-B))/("sin"(A+B))` , then prove that the triangle is either right angled or isosceles.

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The correct Answer is:

the triangle is right angled.

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