Rewrite with only sin x and cos x. cos 3x

Step-by-step explanation:

Then using the identity for the cosine of a sum:

Then using the identities for the double angle which state that: and that , our problem becomes:

Then distributing:

Then combining like terms:

This is already in terms of cos(x) and sin(x) alone so we can stop.

typically if you want , you would actually put questions here for us to you. but hey, that's just me. maybe someone will magically answer the questions for you without knowing what they are.

then say something, tell them they won’t respect you if you don’t even have respect for your self sweetheart you need to lay it on them, all of it : )