Express each of the products into sums or difference of sines and cosines : `cos 9theta. Cos 4theta`

Express each of the products into sums or difference of sines and cosines : 2cos3 theta*sin2 theta

Express each of the products into sums or difference of sines and cosines : 2sin5 theta*cos3 theta

Express each of the following as the sum or difference of sines and cosines: 2cos7 theta cos3 theta

Express each of the products into sums or difference of sines and cosines : sin75^(0).cos15^(0)

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

Convert each of the following products into the sum or difference of sines and cosines: 2cos4 theta cos3 theta

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

Express each of the following products into sum and difference of sines and cosines ( i ) 2cos3 theta sin2 theta( ii) 2sin5 theta cos3 theta( iii) cos9 theta cos4 theta(iv)sin75^(@)cos15^(@)

Express each of the following as the sum or difference of sines and cosines: 2sin4 theta sin3 theta

Express each of the following as the sum or difference of sines and cosines: 2sin4 theta sin3 theta