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| 1. |
किसी `triangleABC` में, `(cosA)/(a) + (cosB)/(b) +(cosC)/(c)=`A. `(a^(2) + b^(2) - c^(2))/(2abc)`B. `(a^(2)-b^(2)+c^(2))/(2abc)`C. `(a^(2)+b^(2)+c^(2))/(abc)`D. `(a^(2)+b^(2)+c^(2))/(2abc)` |
| Answer» Correct Answer - D | |