What is the **range** of the function $f(\theta) = \sin\theta$?
A$\mathbb{R}$
B$[-1, 1]$
C$[0, 1]$
D$(-\infty, 1]$
Answer & Solution
Correct answer: B. $[-1, 1]$
Sine is bounded between $-1$ and $1$ (inclusive). Range = $[-1, 1]$.
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