---
title: Precalc 2023-03-01
---

# Precalc, March 1, 2023

## Test 3

3. What is the bearing of $\mathbf{W}$ from the origin?
Answer: $S$ $26^\circ$ $W$

11.
$$
\cos^{-1}\left(\cos \frac{9 \pi}{8} \right)
$$

17.
$$
f(x) = \cos\left(\sin^{-1} x \right)
$$
Answer: $D: [-1,1]$, $R: [0,1]$