Prove the following trigonometric identity. The question is sin^4Ө =3/8-3/8cos(2Ө)
I think I'm supposed to use the power reducing formulas for trigonometric identities which are
sin^2(u)= (1- cos(2u))/2
*Let u represent any...
The Attempt at a Solution
-In order for me to figure out this problem I had to reverse the equality to isolate the Ө on the left side making the new equation 9cos(3Ө)=r^2. The first thing I’m going to do is change cos(3Ө) in terms of cos and sin. That...