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Express each of the following as the sum or difference of sines and cosines:(i) 2 sin 3x cos x(ii) 2 cos 3x sin 2x(iii) 2 sin 4x sin 3x(iv) 2 cos 7x cos 3x |
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Answer» Express each of the following as the sum or difference of sines and cosines: (i) 2 sin 3x cos x (ii) 2 cos 3x sin 2x (iii) 2 sin 4x sin 3x (iv) 2 cos 7x cos 3x |
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