Express `4 sin A cos B cos C` as the sum of four sines.

Express 4 cos A cos B cos C as the sum of four cosines.

Express each of that as the sum or difference of cosines and sines: 2sin3 theta.cos theta

Express each of that as the sum or difference of cosines and sines: cos 75^@Cos 15^0

Express each of that as the sum or difference of cosines and sines: cos75^(@)cos15^(0)

Express (cos5x-cos7x) as a product of sines or cosines or sines and cosines

Express sin3A and cos2A in terms of sine function

Express each of the following as the sum or difference of sines and cosines: 2sin3 theta cos theta

Express each of the following as the sum or difference of sines and cosines: 2cos3 theta sin2 theta

Express in the products into sums or difference of sines and cosines : 2 sin 5theta. Cos 3theta

If : A+B+C=pi, "then" : sin 2A + sin 2 B - sin 2 C= A) 4 sin A * cos B * cos C B) 4 sin B * sin C * cos A C) 4 sin C * cos A * cos B D) 4 sin A * sin B * sin C