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Mathematics

Solve the following equations for A, if :

sin 3 A = 32\dfrac{\sqrt3}{2}

Trigonometric Identities

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Answer

sin 3 A = 32\dfrac{\sqrt3}{2}

⇒ sin 3A = sin 60°

So, 3A = 60°

⇒ A = 60°3\dfrac{60°}{3}

⇒ A = 20°

Hence, A = 20°.

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