Soln:
If A+B+C=pi , prove that: sin5A+sin5B+sin5C=4cos(5A/2).cos(5B/2).cos(5C/2)
Soln:
If A+B+C=pi , prove that: sin5A+sin5B+sin5C=4cos(5A/2).cos(5B/2).cos(5C/2)
S.E.E. Solution
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