I know the identities by hard. My problem is when its in fraction form with a radical. When do you multiply by conjugate and when not? (See picture for problem with tangent)
Second problem I tried to use sine of sum identity (picture with words)
I know the identities by hard. My problem is when its in fraction form with a radical. When do you multiply by conjugate and when not? (See picture for problem with tangent)
Second problem I tried to use sine of sum identity (picture with words)