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

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Chapter 5 - Precalculus Solutions | StudyQuestionHub