What is the domain of f(x)=cos(x)? a. the set of real numbers -2pi ≤ x ≤ 2pi b. the set of real numbers -1≤x≤1 c. the set of real numbers 0≤x≤2pi d. the set of all real numbers

The domain for cosine is all real numbers because you can go around the unit circle forever and stop at any point on the circle.

D

D. the set of all real numbers

Step-by-step explanation:

The domain of cos x and sine x are set of real numbers , that is the domain is

{-∞ , +∞}

answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation: