📘 trigonometry and set theory
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.
Sine Range
1. State the problem: Find the range of the function $f: \mathbb{R} \to \mathbb{R}$ defined by $f(x)=\sin x$.
2. Formula and rules: For the sine function we have $-1 \le \sin x \le