Verify the identity 4 cos 0 4 sin 0 2 4 cos 0 4 sin 0 32 To verify the identity start with the more complicated side and transform it to look like the other side Choose the correct transformations and transform the expression at each step 4 cos 0 4 sin 0 2 4 cos 0 4 sin 0 2 32 cos 0 32 sin 0 Do not factor Square each of the binomial expressions and combine like terms Factor out the common term Combining like terms to simplify Ann rogol identity