If in a triangle \( A B C, \frac{\cos A+2 \cos C}{\cos A+2 \cos B}=\frac{\sin B}{\sin C} \) prov...

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If in a triangle \( A B C, \frac{\cos A+2 \cos C}{\cos A+2 \cos B}=\frac{\sin B}{\sin C} \) prove that the triangle \( A B C \) is either isosceles or
\( \mathrm{P} \) right angled.

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