In any \( \triangle A B C \), prove that
\[
\Sigma \frac{\sqrt{\sin A}}{\sqrt{\sin B}+\sqrt{\sin... VIDEO
In any \( \triangle A B C \), prove that
\[
\Sigma \frac{\sqrt{\sin A}}{\sqrt{\sin B}+\sqrt{\sin C}-\sqrt{\sin A}} \geq 3
\]
and the equality holds if and only if triangle is equilateral.
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