Question

If sin(theta+alpha)=a and sin(theta+bita)=b, then prove that cos2(alpha-bita)-4ab. cos(alpha-bita)=1-2a²-2b²​

Answer 1

Answer:

If sin(theta+alpha)=a and sin(theta+bita)=b, then prove that cos2(alpha-bita)-4ab. cos(alpha-bita)=1-2a²-2b²

Step-by-step explanation:

Hence proved