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Question
Find the value of x, if sin x = sin 60° cos 30° – cos 60° sin 30°
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Solution
sin x = sin 60° cos 30° – cos 60° sin 30°
sin x = `(sqrt3/2)(sqrt3/2) - (1/2)(1/2)`
sin x = `3/4 - 1/4 = 1/2 = sin30^circ`
Hence, x = 30°
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