Chapter 5
Precalculus · 261 exercises
Problem 1
Find the exact values of the indicated trigonometric functions using the unit circle. $$\sin \left(\frac{5 \pi}{3}\right)$$
6 step solution
Problem 2
Find the exact values of the indicated trigonometric functions using the unit circle. $$\cos \left(\frac{5 \pi}{3}\right)$$
4 step solution
Problem 3
Find the exact values of the indicated trigonometric functions using the unit circle. $$\cos \left(\frac{7 \pi}{6}\right)$$
6 step solution
Problem 4
Find the exact values of the indicated trigonometric functions using the unit circle. $$\sin \left(\frac{7 \pi}{6}\right)$$
6 step solution
Problem 5
Find the exact values of the indicated trigonometric functions using the unit circle. $$\sin \left(\frac{3 \pi}{4}\right)$$
3 step solution
Problem 6
Find the exact values of the indicated trigonometric functions using the unit circle. $$\cos \left(\frac{3 \pi}{4}\right)$$
3 step solution
Problem 7
Find the exact values of the indicated trigonometric functions using the unit circle. $$\tan \left(\frac{7 \pi}{4}\right)$$
4 step solution
Problem 8
Find the exact values of the indicated trigonometric functions using the unit circle. $$\cot \left(\frac{7 \pi}{4}\right)$$
4 step solution
Problem 9
In Exercises \(9-28,\) graph the functions over the indicated intervals. $$y=\tan \left(\frac{1}{2} x\right),-2 \pi \leq x \leq 2 \pi$$
4 step solution
Problem 9
Find the exact values of the indicated trigonometric functions using the unit circle. $$(5 \pi)$$
4 step solution
Problem 10
In Exercises \(9-28,\) graph the functions over the indicated intervals. $$y=\cot \left(\frac{1}{2} x\right),-2 \pi \leq x \leq 2 \pi$$
4 step solution
Problem 10
Find the exact values of the indicated trigonometric functions using the unit circle. $$\csc \left(\frac{5 \pi}{3}\right)$$
6 step solution
Problem 11
In Exercises \(11-20,\) state the amplitude and period of each function. $$y=\frac{3}{2} \cos (3 x)$$
3 step solution
Problem 11
In Exercises \(9-28,\) graph the functions over the indicated intervals. $$y=-\cot (2 \pi x),-1 \leq x \leq 1$$
4 step solution
Problem 11
Find the exact values of the indicated trigonometric functions using the unit circle. $$\tan \left(\frac{4 \pi}{3}\right)$$
4 step solution
Problem 12
In Exercises \(11-20,\) state the amplitude and period of each function. $$y=\frac{2}{3} \sin (4 x)$$
5 step solution
Problem 12
In Exercises \(9-28,\) graph the functions over the indicated intervals. $$y=-\tan (2 \pi x),-1 \leq x \leq 1$$
5 step solution
Problem 12
Find the exact values of the indicated trigonometric functions using the unit circle. $$\cot \left(\frac{11 \pi}{6}\right)$$
5 step solution
Problem 13
In Exercises \(11-20,\) state the amplitude and period of each function. $$y=-\sin (5 x)$$
3 step solution
Problem 13
In Exercises \(9-28,\) graph the functions over the indicated intervals. $$y=2 \tan (3 x),-\pi \leq x \leq \pi$$
6 step solution
Problem 13
Find the exact values of the indicated trigonometric functions using the unit circle. $$\csc \left(\frac{5 \pi}{6}\right)$$
3 step solution
Problem 14
In Exercises \(11-20,\) state the amplitude and period of each function. $$y=-\cos (7 x)$$
4 step solution
Problem 14
In Exercises \(9-28,\) graph the functions over the indicated intervals. $$y=2 \tan \left(\frac{1}{2} x\right),-3 \pi \leq x \leq 3 \pi$$
5 step solution
Problem 14
Find the exact values of the indicated trigonometric functions using the unit circle. $$\cot \left(\frac{2 \pi}{3}\right)$$
6 step solution
Problem 15
In Exercises \(11-20,\) state the amplitude and period of each function. $$y=\frac{2}{3} \cos \left(\frac{3}{2} x\right)$$
3 step solution
Problem 15
In Exercises \(9-28,\) graph the functions over the indicated intervals. $$y=-\frac{1}{4} \cot \left(\frac{x}{2}\right),-2 \pi \leq x \leq 2 \pi$$
5 step solution
Problem 15
Use the unit circle and the fact that sine is an odd function and cosine is an even function to find the exact values of the indicated functions. $$\sin \left(-\frac{2 \pi}{3}\right)$$
5 step solution
Problem 16
In Exercises \(11-20,\) state the amplitude and period of each function. $$y=\frac{3}{2} \sin \left(\frac{2}{3} x\right)$$
2 step solution
Problem 16
In Exercises \(9-28,\) graph the functions over the indicated intervals. $$y=-\frac{1}{2} \tan \left(\frac{x}{4}\right),-4 \pi \leq x \leq 4 \pi$$
5 step solution
Problem 16
Use the unit circle and the fact that sine is an odd function and cosine is an even function to find the exact values of the indicated functions. $$\sin \left(-\frac{5 \pi}{4}\right)$$
5 step solution
Problem 17
In Exercises \(11-20,\) state the amplitude and period of each function. $$y=-3 \cos (\pi x)$$
2 step solution
Problem 17
In Exercises \(9-28,\) graph the functions over the indicated intervals. $$y=-\tan \left(x-\frac{\pi}{2}\right),-\pi \leq x \leq \pi$$
5 step solution
Problem 17
Use the unit circle and the fact that sine is an odd function and cosine is an even function to find the exact values of the indicated functions. $$\sin \left(-\frac{\pi}{3}\right)$$
5 step solution
Problem 18
In Exercises \(11-20,\) state the amplitude and period of each function. $$y=-2 \sin (\pi x)$$
2 step solution
Problem 18
In Exercises \(9-28,\) graph the functions over the indicated intervals. $$y=\tan \left(x+\frac{\pi}{4}\right),-\pi \leq x \leq \pi$$
5 step solution
Problem 19
In Exercises \(11-20,\) state the amplitude and period of each function. $$y=5 \sin \left(\frac{\pi}{3} x\right)$$
4 step solution
Problem 19
In Exercises \(9-28,\) graph the functions over the indicated intervals. $$y=2 \tan \left(x+\frac{\pi}{6}\right),-\pi \leq x \leq \pi$$
4 step solution
Problem 19
Use the unit circle and the fact that sine is an odd function and cosine is an even function to find the exact values of the indicated functions. $$\cos \left(-\frac{3 \pi}{4}\right)$$
5 step solution
Problem 20
In Exercises \(11-20,\) state the amplitude and period of each function. $$y=4 \cos \left(\frac{\pi}{4} x\right)$$
3 step solution
Problem 20
In Exercises \(9-28,\) graph the functions over the indicated intervals. $$y=-\frac{1}{2} \tan (x+\pi),-\pi \leq x \leq \pi$$
7 step solution
Problem 20
Use the unit circle and the fact that sine is an odd function and cosine is an even function to find the exact values of the indicated functions. $$\cos \left(-\frac{5 \pi}{3}\right)$$
3 step solution
Problem 21
In Exercises \(21-32,\) graph the given function over one period. $$y=8 \cos x$$
5 step solution
Problem 21
In Exercises \(9-28,\) graph the functions over the indicated intervals. $$y=\cot \left(x-\frac{\pi}{4}\right),-\pi \leq x \leq \pi$$
4 step solution
Problem 21
Use the unit circle and the fact that sine is an odd function and cosine is an even function to find the exact values of the indicated functions. $$\cos \left(-\frac{5 \pi}{6}\right)$$
3 step solution
Problem 22
In Exercises \(21-32,\) graph the given function over one period. $$y=7 \sin x$$
5 step solution
Problem 22
In Exercises \(9-28,\) graph the functions over the indicated intervals. $$y=-\cot \left(x+\frac{\pi}{2}\right),-\pi \leq x \leq \pi$$
4 step solution
Problem 22
Use the unit circle and the fact that sine is an odd function and cosine is an even function to find the exact values of the indicated functions. $$\cos \left(-\frac{7 \pi}{4}\right)$$
4 step solution
Problem 23
In Exercises \(21-32,\) graph the given function over one period. $$y=\sin (4 x)$$
5 step solution
Problem 23
In Exercises \(9-28,\) graph the functions over the indicated intervals. $$y=-\frac{1}{2} \cot \left(x+\frac{\pi}{3}\right),-\pi \leq x \leq \pi$$
7 step solution
Problem 23
Use the unit circle and the fact that sine is an odd function and cosine is an even function to find the exact values of the indicated functions. $$\sin \left(-\frac{5 \pi}{4}\right)$$
4 step solution