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प्रश्न
Find the value of x, if sin 3x = 2 sin 30° cos 30°
उत्तर
sin 3x = 2 sin 30° cos 30°
sin 3x = `2(1/2)(sqrt3/2)`
sin 3x = `sqrt3/2 = sin60^circ`
3x = 60°
Hence, x = 20°
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