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Express each of the following as the product of sines and cosines:(i) sin 12x + sin 4x(ii) sin 5x − sin x(iii) cos 12x + cos 8x(iv) cos 12x − cos 4x(v) sin 2x + cos 4x |
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Answer» Express each of the following as the product of sines and cosines: (i) sin 12x + sin 4x (ii) sin 5x − sin x (iii) cos 12x + cos 8x (iv) cos 12x − cos 4x (v) sin 2x + cos 4x |
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