Chapter 6

Precalculus Mathematics for Calculus · 251 exercises

Problem 16

Sketch each triangle, and then solve the triangle using the Law of sines. $$\angle A=22^{\circ}, \quad \angle B=95^{\circ}, \quad a=420$$

6 step solution

Problem 16

Find the degree measure of the angle with the given radian measure. $$\frac{11 \pi}{3}$$

3 step solution

Problem 17

Solve triangle \(A B C\). \(b=125, \quad c=162, \quad \angle B=40^{\circ}\)

5 step solution

Problem 17

Find the exact value of the trigonometric function. $$\csc \left(-630^{\circ}\right)$$

4 step solution

Problem 17

Sketch each triangle, and then solve the triangle using the Law of sines. $$\angle B=29^{\circ}, \quad \angle C=51^{\circ}, \quad b=44$$

6 step solution

Problem 17

Find the degree measure of the angle with the given radian measure. $$-\frac{5 \pi}{4}$$

4 step solution

Problem 18

Solve triangle \(A B C\). \(a=65, \quad c=50, \quad \angle C=52^{\circ}\)

6 step solution

Problem 18

Find the exact value of the trigonometric function. $$\cot 210^{\circ}$$

4 step solution

Problem 18

Sketch each triangle, and then solve the triangle using the Law of sines. $$\angle B=10^{\circ}, \quad \angle C=100^{\circ}, \quad c=115$$

5 step solution

Problem 18

Find the degree measure of the angle with the given radian measure. $$-\frac{3 \pi}{2}$$

4 step solution

Problem 19

Solve triangle \(A B C\). \(a=50, \quad b=65, \quad \angle A=55^{\circ}\)

6 step solution

Problem 19

Find the exact value of the trigonometric function. $$\cos 570^{\circ}$$

5 step solution

Problem 19

Use the Law of sines to solve for all possible triangles that satisfy the given conditions. $$a=28, \quad b=15, \quad \angle A=110^{\circ}$$

4 step solution

Problem 19

Sketch a triangle that has acute angle \(\theta\), and find the other five trigonometric ratios of \(\theta\). $$\sin \theta=\frac{3}{5}$$

8 step solution

Problem 19

Find the degree measure of the angle with the given radian measure. $$3$$

4 step solution

Problem 20

Solve triangle \(A B C\). \(a=73.5, \quad \angle B=61^{\circ}, \quad \angle C=83^{\circ}\)

4 step solution

Problem 20

Find the exact value of the trigonometric function. $$\sec 120^{\circ}$$

5 step solution

Problem 20

Use the Law of sines to solve for all possible triangles that satisfy the given conditions. $$a=30, \quad c=40, \quad \angle A=37^{\circ}$$

5 step solution

Problem 20

Find the degree measure of the angle with the given radian measure. $$-2$$

4 step solution

Problem 21

Find the exact value of the trigonometric function. $$\tan 750^{\circ}$$

2 step solution

Problem 21

Find all angles \(\theta\) between \(0^{\circ}\) and \(180^{\circ}\) satisfying the given equation. $$\sin \theta=\frac{1}{2}$$

4 step solution

Problem 21

Use the Law of sines to solve for all possible triangles that satisfy the given conditions. $$a=20, \quad c=45, \quad \angle A=125^{\circ}$$

2 step solution

Problem 21

Sketch a triangle that has acute angle \(\theta\), and find the other five trigonometric ratios of \(\theta\). $$\cot \theta=1$$

6 step solution

Problem 21

Find the degree measure of the angle with the given radian measure. $$-1.2$$

4 step solution

Problem 22

Find the exact value of the trigonometric function. $$\cos 660^{\circ}$$

4 step solution

Problem 22

Find all angles \(\theta\) between \(0^{\circ}\) and \(180^{\circ}\) satisfying the given equation. $$\sin \theta=\frac{\sqrt{3}}{2}$$

4 step solution

Problem 22

Use the Law of sines to solve for all possible triangles that satisfy the given conditions. $$b=45, \quad c=42, \quad \angle C=38^{\circ}$$

8 step solution

Problem 22

Sketch a triangle that has acute angle \(\theta\), and find the other five trigonometric ratios of \(\theta\). $$\tan \theta=\sqrt{3}$$

4 step solution

Problem 22

Find the degree measure of the angle with the given radian measure. $$3.4$$

4 step solution

Problem 23

Find the exact value of the trigonometric function. $$\sin \frac{2 \pi}{3}$$

4 step solution

Problem 23

Find all angles \(\theta\) between \(0^{\circ}\) and \(180^{\circ}\) satisfying the given equation. $$\sin \theta=0.7$$

5 step solution

Problem 23

Use the Law of sines to solve for all possible triangles that satisfy the given conditions. $$b=25, \quad c=30, \quad \angle B=25^{\circ}$$

5 step solution

Problem 23

Sketch a triangle that has acute angle \(\theta\), and find the other five trigonometric ratios of \(\theta\). $$\sec \theta=\frac{7}{2}$$

8 step solution

Problem 23

Find the degree measure of the angle with the given radian measure. $$\frac{\pi}{10}$$

4 step solution

Problem 24

Find the exact value of the trigonometric function. $$\sin \frac{5 \pi}{3}$$

4 step solution

Problem 24

Find all angles \(\theta\) between \(0^{\circ}\) and \(180^{\circ}\) satisfying the given equation. $$\sin \theta=\frac{1}{4}$$

4 step solution

Problem 24

Use the Law of sines to solve for all possible triangles that satisfy the given conditions. $$a=75, \quad b=100, \quad \angle A=30^{\circ}$$

5 step solution

Problem 24

Sketch a triangle that has acute angle \(\theta\), and find the other five trigonometric ratios of \(\theta\). $$\csc \theta=\frac{13}{12}$$

4 step solution

Problem 24

Find the degree measure of the angle with the given radian measure. $$\frac{5 \pi}{18}$$

5 step solution

Problem 25

Find the exact value of the trigonometric function. $$\sin \frac{3 \pi}{2}$$

3 step solution

Problem 25

Find all angles \(\theta\) between \(0^{\circ}\) and \(180^{\circ}\) satisfying the given equation. $$\cos \theta=0.7$$

3 step solution

Problem 25

Use the Law of sines to solve for all possible triangles that satisfy the given conditions. $$a=50, \quad b=100, \quad \angle A=50^{\circ}$$

4 step solution

Problem 25

Evaluate the expression without using a calculator. $$\sin \frac{\pi}{6}+\cos \frac{\pi}{6}$$

4 step solution

Problem 25

Find the degree measure of the angle with the given radian measure. $$-\frac{2 \pi}{15}$$

4 step solution

Problem 26

Find the exact value of the trigonometric function. $$\cos \frac{7 \pi}{3}$$

3 step solution

Problem 26

Find all angles \(\theta\) between \(0^{\circ}\) and \(180^{\circ}\) satisfying the given equation. $$\cos \theta=\frac{1}{9}$$

5 step solution

Problem 26

Use the Law of sines to solve for all possible triangles that satisfy the given conditions. $$a=100, \quad b=80, \quad \angle A=135^{\circ}$$

7 step solution

Problem 26

Evaluate the expression without using a calculator. $$\sin 30^{\circ} \csc 30^{\circ}$$

3 step solution

Problem 26

Find the degree measure of the angle with the given radian measure. $$-\frac{13 \pi}{12}$$

4 step solution

Problem 27

Find the exact value of the trigonometric function. $$\cos \left(-\frac{7 \pi}{3}\right)$$

4 step solution

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