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प्रश्न
Prove that:
sin 60° = 2 sin 30° cos 30°
उत्तर
LHS = sin 60° = `(sqrt3)/(2)`
RHS = 2 sin 60° cos 60° = `2 xx (sqrt3)/(2) xx (1)/(2) = (sqrt3)/(2)`
LHS = RHS
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