Question

Rewrite with only sin x and cos x.

sin 2x - cos 2x

Answer 1

Have you considered the double angle formulas?

Answer 2

yes but im always confused on which to use on the cos2x

Answer 3

What difference does it make? Use any of the three. Reread the problem statement until you believe!

Answer 4

wait is it 2sin^2x + 2sincos -1

Answer 5

Is that just sin(x) and cos(x)?

Answer 6

ya i think so

Answer 7

There you have it. I am a little curious why you put the sin(2x) in the middle of the two cos(2x) pieces, but that curiosity is of no consequence.

Answer 8

it is some type of formula, just how you simplify it i guess.

Answer 9

Looks pretty "simplified" to me!