91Ó°ÊÓ

Convert each of the following to radians without using a calculator. \(90^{\circ}\)

Problems 57 through 66 will help prepare you for the next section. Use your graphing calculator to graph each family of functions for \(-2 \pi \leq x \leq 2 \pi\) together on a single coordinate system. (Make sure your calculator is set to radian mode.) What effect does the value of \(A\) have on the graph? $$ y=A \cos x \text { for } A=1,3,5 $$

Evaluate without using a calculator. $$ \tan ^{-1}\left(\tan 60^{\circ}\right) $$

Use your graphing calculator to graph each pair of functions for \(-2 \pi \leq x \leq 2 \pi\) together on a single coordinate system. (Make sure your calculator is set to radian mode.) What effect does the negative sign have on the graph? $$ y=3 \sin x, y=-3 \sin x $$

The problems that follow review material we covered in Sections \(2.2\) and \(3.3\). Identify the argument of each function. $$ \cos 4 \theta $$

Evaluate without using a calculator. $$ \tan ^{-1}\left(\tan \frac{5 \pi}{6}\right) $$

Convert each of the following to radians without using a calculator. \(150^{\circ}\)

The problems that follow review material we covered in Sections \(2.2\) and \(3.3\). Identify the argument of each function. $$ \sin (A-B) $$

Evaluate without using a calculator. $$ \tan ^{-1}\left(\tan \frac{2 \pi}{3}\right) $$

Convert each of the following to radians without using a calculator. \(300^{\circ}\)