Question

: The domain of the sine function is ____.

A: All real numbers
B: [-1, 1]
C: 2π
D: π

Answer 1

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Answer on Question #58215 – Math – Trigonometry

Question

The domain of the sine function is _____.

A: All real numbers

B: [-1, 1]

C: $2\pi$

D: $\pi$

Solution

The domain of function $f(x)$ is all values that $x$ can take on.

The domain of sine is all real numbers (other notations: domain is $\mathbb{R} = (-\infty, +\infty)$).

If $f(x) = \sin(x)$, then $-\infty < x < +\infty$.

**Answer**: A. All real numbers.