Express as a sum or difference the following: `2sin5 theta sin7theta`

Express as a sum or difference, (iii) sin2theta cos7theta

Express each of the following as a sum or difference. sin 5 theta sin 4theta

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

Express as sum or difference: 2sin3thetacos4theta

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

Convert each of the following products into the sum or difference of sines and cosines: 2sin3 theta sin theta

Express each of that as the sum or difference of cosines and sines: 5sin theta*sin8 theta

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

Express as sum or difference: "sin" (3theta)/2 "cos" (5 theta)/2