Answer:
What's the question you f... you amazing human being
This is a very hard questions but i tried my best and i tried and even tried decimals! but it was too hard for me! sorry!
Answer:
The answer is a. cos2x - sin2x - sin x. Use the rule: cos2x = (cos^2)x - (sin^2)x. So, substitute cos2x in the expression: cos2x - sinx = ((cos^2)x - (sin^2)x) - sinx = (cos^2)x - (sin^2)x - sinx. Therefore, choice a. is correct choice.
