Rewrite the following using a single trigonometric function. You may wish to review your trigonometric identities in Chapter 1. Homework Help ✎
10 sin(3x) cos(3x)
sin x cos 3x − sin 3x cos x
cos4 x − sin4 x
tan x + cot x
Double Angle identity (factor first).
Sum and Difference (Angle Sum) identity.
Start by rewriting tan(x) and cot(x) as fractions.
You will use more than one identity.