Question

3 cos x+cos3x/3 sin x-sin 3x​

Answer 1

Step-by-step explanation:

3Cosx + (4Cos³x - 3Cosx) / 3Sinx - (3Sinx-4Sin³x)

4Cos³x / 4Sin³x

Cos³x / Sin³x

Cot³x

Answer 2

Answer:

I don't know ask simple question