Answer: https://socratic.org/questions/how-do-you-simplify-cos-4x-sin-4x#618537
Answer:
Step-by-step explanation:
FYI,
a² - b² = (a + b)(a - b)
f(x) = - = (cos²x + sin²x)(cos²x - sin²x) =
= <em>(cos²x + sin²x)(cos x + sin x)(cos x - sin x)</em>
If you need to simplify, then
f(x) = 1 × (cos²x - sin²x) = <em>cos(2x)</em>
The answer is clearly b makes the most sense
Step 1: Add 3 to both sides.
2x-3+3=7+3
2x=10
Step 2: Divide both sides by 2.
2x/2=10/2
x=5
Answer: Rotation
