InterviewSolution
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InterviewSolution
| 1. |
\begin{array} { l } { \text { In } \triangle A B C \text { , if } a \cos A = b \cos B , \text { then prove that } } \\ { \text { the triangle is either a right-angled or an } } \\ { \text { isosceles triangle. } } \end{array} |
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