" (i) "sin3A=3sin A-4sin^(3)A

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If A=30, then show that sin3A=3sinA-4sin^(3)A

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If A=30, then show that sin3A=3sinA-4sin^(3)A

Prove that sin3A=3sinA-4sin^3 A

if 2 sin A - 1 = 0, show that : sin 3 A = 3 sin A - 4 sin^(3) A

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