Ask Question
Yesterday, 21:57

Rewrite with only sin x and cos x.

cos 2x - sin x

Select one:

a. cos2x - sin2x - sin x

b. cos2x - sin3x

c. cos2x + sin2x + sin x

d. cos2x - 3 sin x

+3
Answers (1)
  1. Today, 00:10
    0
    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.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Rewrite with only sin x and cos x. cos 2x - sin x Select one: a. cos2x - sin2x - sin x b. cos2x - sin3x c. cos2x + sin2x + sin x d. cos2x - ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers