The function $y=\sinx$ is called principal sine function if we restrict the domain of $y=\sinx$ to the interval

Question

Accepted Answer

$-\frac{\pi}{2}\leq x\leq\frac{\pi}{2}$

Answer

$-\pi\leq x\leq\pi$

Answer

$-2\pi\leq x\leq 2\pi$

Answer

$-1\leq x\leq\1$