Chapter 4

Precalculus · 399 exercises

Problem 1

Solve each triangle. $$a=4, c=3, \beta=100^{\circ}$$

3 step solution

Problem 1

The terminal side of an angle \(\theta\) in standard position passes through values of the six trigonometric functions for angle \(\theta\) $$(3,6)$$

8 step solution

Problem 1

Find \((a)\) the complement and \((b)\) the supplement of the given angles. $$18^{\circ}$$

4 step solution

Problem 2

Solve each triangle. $$a=6, b=10, \gamma=80^{\circ}$$

7 step solution

Problem 2

The terminal side of an angle \(\theta\) in standard position passes through values of the six trigonometric functions for angle \(\theta\) $$.(8,4)$$

6 step solution

Problem 2

Find \((a)\) the complement and \((b)\) the supplement of the given angles. $$39^{\circ}$$

4 step solution

Problem 3

Solve each triangle. $$b=7, c=2, \alpha=16^{\circ}$$

6 step solution

Problem 3

The terminal side of an angle \(\theta\) in standard position passes through values of the six trigonometric functions for angle \(\theta\) $$\left(\frac{1}{2}, \frac{2}{5}\right)$$

3 step solution

Problem 3

Find \((a)\) the complement and \((b)\) the supplement of the given angles. $$42^{\circ}$$

4 step solution

Problem 4

Solve each triangle. $$b=5, a=6, \gamma=170^{\circ}$$

5 step solution

Problem 4

The terminal side of an angle \(\theta\) in standard position passes through values of the six trigonometric functions for angle \(\theta\) $$\left(\frac{4}{7}, \frac{2}{3}\right)$$

5 step solution

Problem 4

Find \((a)\) the complement and \((b)\) the supplement of the given angles. $$57^{\circ}$$

2 step solution

Problem 5

Solve each triangle. $$b=5, c=5, \alpha=20^{\circ}$$

5 step solution

Problem 5

The terminal side of an angle \(\theta\) in standard position passes through values of the six trigonometric functions for angle \(\theta\) $$(-2,4)$$

4 step solution

Problem 5

Find \((a)\) the complement and \((b)\) the supplement of the given angles. $$89^{\circ}$$

4 step solution

Problem 6

Solve each triangle. $$a=4.2, b=7.3, \gamma=25^{\circ}$$

5 step solution

Problem 6

Classify triangle problem as cases AAS, ASA, SAS, SSA, or SSS on the basis of the given information. (Check your book to see figure) $$\beta, \gamma, \text { and } a$$

4 step solution

Problem 6

The terminal side of an angle \(\theta\) in standard position passes through values of the six trigonometric functions for angle \(\theta\) $$(-1,3)$$

7 step solution

Problem 6

Find \((a)\) the complement and \((b)\) the supplement of the given angles. $$75^{\circ}$$

3 step solution

Problem 7

Solve the following triangles with the given measures. $$\alpha=45^{\circ}, \beta=60^{\circ}, a=10 \mathrm{m}$$

3 step solution

Problem 7

Solve each triangle. $$a=9, c=12, \beta=23^{\circ}$$

6 step solution

Problem 7

Find the measure (in radians) of a central angle \(\theta\) that intercepts an are of length \(s\) on a circle with radius \(r\). \(r=22\) in., \(s=4\) in.

4 step solution

Problem 8

Solve each triangle. $$b=6, c=13, \alpha=16^{\circ}$$

6 step solution

Problem 8

Solve the following triangles with the given measures. $$\beta=75^{\circ}, \gamma=60^{\circ}, b=25 \text { in. }$$

3 step solution

Problem 8

Find the measure (in radians) of a central angle \(\theta\) that intercepts an are of length \(s\) on a circle with radius \(r\). \(r=6\) in., \(s=1\) in.

4 step solution

Problem 8

The terminal side of an angle \(\theta\) in standard position passes through values of the six trigonometric functions for angle \(\theta\) $$(-9,-5)$$

4 step solution

Problem 9

Solve each triangle. $$a=4, c=8, \beta=60^{\circ}$$

4 step solution

Problem 9

Solve the following triangles with the given measures. $$\alpha=46^{\circ}, \gamma=72^{\circ}, b=200 \mathrm{cm}$$

4 step solution

Problem 9

Find the measure (in radians) of a central angle \(\theta\) that intercepts an are of length \(s\) on a circle with radius \(r\). \(r=100 \mathrm{cm}, s=20 \mathrm{mm}\)

4 step solution

Problem 9

The terminal side of an angle \(\theta\) in standard position passes through values of the six trigonometric functions for angle \(\theta\) $$(-\sqrt{2}, \sqrt{3})$$

8 step solution

Problem 10

Solve each triangle. $$b=3, c=\sqrt{18}, \alpha=45^{\circ}$$

6 step solution

Problem 10

Solve the following triangles with the given measures. $$\gamma=100^{\circ}, \beta=40^{\circ}, a=16 \mathrm{ft}$$

4 step solution

Problem 10

Find the measure (in radians) of a central angle \(\theta\) that intercepts an are of length \(s\) on a circle with radius \(r\). \(r=1 \mathrm{m}, s=2 \mathrm{cm}\)

4 step solution

Problem 11

Find the measure (in radians) of a central angle \(\theta\) that intercepts an are of length \(s\) on a circle with radius \(r\). \(r=\frac{1}{4}\) in., \(s=\frac{1}{32}\) in.

5 step solution

Problem 11

The terminal side of an angle \(\theta\) in standard position passes through values of the six trigonometric functions for angle \(\theta\) $$(-\sqrt{5},-\sqrt{3})$$

7 step solution

Problem 12

Solve the following triangles with the given measures. $$\beta=104.2^{\circ}, \gamma=33.6^{\circ}, a=26 \mathrm{in}$$

6 step solution

Problem 12

Find the measure (in radians) of a central angle \(\theta\) that intercepts an are of length \(s\) on a circle with radius \(r\). \(r=\frac{3}{4} \mathrm{cm}, s=\frac{3}{14} \mathrm{cm}\)

5 step solution

Problem 12

The terminal side of an angle \(\theta\) in standard position passes through values of the six trigonometric functions for angle \(\theta\) $$(-\sqrt{6},-\sqrt{5})$$

7 step solution

Problem 13

Solve each triangle. $$a=4, b=4, c=5$$

5 step solution

Problem 13

Convert from degrees to radians. Leave the answers in terms of \(\pi\). $$30^{\circ}$$

3 step solution

Problem 13

The terminal side of an angle \(\theta\) in standard position passes through values of the six trigonometric functions for angle \(\theta\) $$\left(-\frac{10}{3},-\frac{4}{3}\right)$$

5 step solution

Problem 14

Solve the following triangles with the given measures. $$\alpha=45^{\circ}, \gamma=75^{\circ}, c=9 \text { in }$$

5 step solution

Problem 14

The terminal side of an angle \(\theta\) in standard position passes through values of the six trigonometric functions for angle \(\theta\) $$\left(-\frac{2}{9},-\frac{1}{3}\right)$$

4 step solution

Problem 14

Convert from degrees to radians. Leave the answers in terms of \(\pi\). $$60^{\circ}$$

3 step solution

Problem 14

Match the trigonometric function values. a. \(\frac{1}{2}\) b. \(\frac{\sqrt{3}}{2}\) c. \(\frac{\sqrt{2}}{2}\) $$\sin 60^{\circ}$$

2 step solution

Problem 15

Solve the following triangles with the given measures. $$\beta=26^{\circ}, \gamma=57^{\circ}, c=100 \mathrm{yd}$$

4 step solution

Problem 15

Indicate the quadrant in which the terminal side of \(\theta\) must lie in order for the information to be true. \(\cos \theta\) is positive and \(\sin \theta\) is negative.

3 step solution

Problem 15

Match the trigonometric function values. a. \(\frac{1}{2}\) b. \(\frac{\sqrt{3}}{2}\) c. \(\frac{\sqrt{2}}{2}\) $$\cos \left(\frac{\pi}{6}\right)$$

4 step solution

Problem 15

Convert from degrees to radians. Leave the answers in terms of \(\pi\). $$45^{\circ}$$

4 step solution

Problem 16

Solve each triangle. $$a=1492, b=2001, c=1776$$

5 step solution

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Chapter 4 - Precalculus Solutions | StudyQuestionHub