91Ó°ÊÓ

For each function value, write the value or tell why it is undefined. Do not use a calculator. \(\tan \frac{\pi}{2}\)

In \(3-22 :\) a. Rewrite each function value in terms of its cofunction. b. Find, to four decimal places, the value of the function value found in a. $$ \tan 54^{\circ} $$

In \(3-14,\) for each given function value, find the remaining five trigonometric function values. \(\cos \theta=-\frac{3}{4}\) and \(\theta\) is in the third quadrant.

In \(3-12\) , find the exact function value of each of the following if the measure of the angle is given in radians. $$ \cos \frac{\pi}{2} $$

In \(3-12,\) find the radian measure of each angle whose degree measure is given. \(45^{\circ}\)

For each function value, write the value or tell why it is undefined. Do not use a calculator. \(\sec \frac{\pi}{2}\)

In \(3-14,\) for each given function value, find the remaining five trigonometric function values. \(\sin \theta=-\frac{2}{3}\) and \(\theta\) is in the fourth quadrant.

In \(3-22 :\) a. Rewrite each function value in terms of its cofunction. b. Find, to four decimal places, the value of the function value found in a. $$ \sin 86^{\circ} $$

In \(3-12\) , find the exact function value of each of the following if the measure of the angle is given in radians. $$ \tan \frac{\pi}{6} $$

In \(3-12,\) find the radian measure of each angle whose degree measure is given. \(120^{\circ}\)