1.

Express each of the following as the product of sinces and cosines (i) sin12θ+sin4θ (ii) sin5θ−sinθ (iii) cos12θ−cos4θ (iv) sin2θ+cos4θ

Answer»

Express each of the following as the product of sinces and cosines
(i) sin12θ+sin4θ
(ii) sin5θsinθ
(iii) cos12θcos4θ
(iv) sin2θ+cos4θ



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