In any \( \triangle \mathrm{ABC} \) prove that \( \sin \mathrm{A}+\sin \mathrm{B}+\sin \mathrm{C...
In any \( \triangle \mathrm{ABC} \) prove that \( \sin \mathrm{A}+\sin \mathrm{B}+\sin \mathrm{C} \leq \frac{3 \sqrt{3}}{2} \)
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