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