<< Chapter < Page Chapter >> Page >

Section exercises

Verbal

Describe the altitude of a triangle.

The altitude extends from any vertex to the opposite side or to the line containing the opposite side at a 90° angle.

Got questions? Get instant answers now!

Compare right triangles and oblique triangles.

Got questions? Get instant answers now!

When can you use the Law of Sines to find a missing angle?

When the known values are the side opposite the missing angle and another side and its opposite angle.

Got questions? Get instant answers now!

In the Law of Sines, what is the relationship between the angle in the numerator and the side in the denominator?

Got questions? Get instant answers now!

What type of triangle results in an ambiguous case?

A triangle with two given sides and a non-included angle.

Got questions? Get instant answers now!

Algebraic

For the following exercises, assume α is opposite side a , β is opposite side b , and γ is opposite side c . Solve each triangle, if possible. Round each answer to the nearest tenth.

α = 43° , γ = 69° , a = 20

Got questions? Get instant answers now!

α = 35° , γ = 73° , c = 20

  β = 72° , a 12.0 , b 19.9

Got questions? Get instant answers now!

α = 60° , β = 60° , γ = 60°

Got questions? Get instant answers now!

a = 4 , α = 60° , β = 100°

  γ = 20° , b 4.5 , c 1.6

Got questions? Get instant answers now!

b = 10 , β = 95° , γ = 30°

Got questions? Get instant answers now!

For the following exercises, use the Law of Sines to solve for the missing side for each oblique triangle. Round each answer to the nearest hundredth. Assume that angle A is opposite side a , angle B is opposite side b , and angle C is opposite side c .

Find side b when A = 37° , B = 49° , c = 5.

b 3.78

Got questions? Get instant answers now!

Find side a when A = 132° , C = 23° , b = 10.

Got questions? Get instant answers now!

Find side c when B = 37° , C = 21 , b = 23.

c 13.70

Got questions? Get instant answers now!

For the following exercises, assume α is opposite side a , β is opposite side b , and γ is opposite side c . Determine whether there is no triangle, one triangle, or two triangles. Then solve each triangle, if possible. Round each answer to the nearest tenth.

α = 119° , a = 14 , b = 26

Got questions? Get instant answers now!

γ = 113° , b = 10 , c = 32

one triangle, α 50.3° , β 16.7° , a 26.7

Got questions? Get instant answers now!

b = 3.5 , c = 5.3 , γ = 80°

Got questions? Get instant answers now!

a = 12 , c = 17 , α = 35°

two triangles,   γ 54.3° , β 90.7° , b 20.9 or   γ 125.7° , β 19.3° , b 6.9

Got questions? Get instant answers now!

a = 20.5 , b = 35.0 , β = 25°

Got questions? Get instant answers now!

a = 7 , c = 9 , α = 43°

two triangles,   β 75.7° ,   γ 61.3° , b 9.9 or   β 18.3° , γ 118.7° , b 3.2

Got questions? Get instant answers now!

a = 7 , b = 3 , β = 24°

Got questions? Get instant answers now!

b = 13 , c = 5 , γ = 10°

two triangles, α 143.2° , β 26.8° , a 17.3 or α 16.8° , β 153.2° , a 8.3

Got questions? Get instant answers now!

a = 2.3 , c = 1.8 , γ = 28°

Got questions? Get instant answers now!

β = 119° , b = 8.2 , a = 11.3

no triangle possible

Got questions? Get instant answers now!

For the following exercises, use the Law of Sines to solve, if possible, the missing side or angle for each triangle or triangles in the ambiguous case. Round each answer to the nearest tenth.

Find angle A when a = 24 , b = 5 , B = 22°.

Got questions? Get instant answers now!

Find angle A when a = 13 , b = 6 , B = 20°.

A 47.8° or A 132.2°

Got questions? Get instant answers now!

Find angle B when A = 12° , a = 2 , b = 9.

Got questions? Get instant answers now!

For the following exercises, find the area of the triangle with the given measurements. Round each answer to the nearest tenth.

a = 5 , c = 6 , β = 35°

8.6

Got questions? Get instant answers now!

b = 11 , c = 8 , α = 28°

Got questions? Get instant answers now!

a = 32 , b = 24 , γ = 75°

370.9

Got questions? Get instant answers now!

a = 7.2 , b = 4.5 , γ = 43°

Got questions? Get instant answers now!

Graphical

For the following exercises, find the length of side x . Round to the nearest tenth.

For the following exercises, find the measure of angle x , if possible. Round to the nearest tenth.

A triangle. One angle is 22 degrees with side opposite = 5. Another angle is x degrees with opposite side = 13.

x = 76.9° or  x = 103.1°

Got questions? Get instant answers now!

Notice that x is an obtuse angle.

A triangle. One angle is 55 degrees with side opposite = 21. Another angle is x degrees with opposite side = 24.

110.6°

Got questions? Get instant answers now!

For the following exercises, find the area of each triangle. Round each answer to the nearest tenth.

A triangle. One angle is 93 degrees with opposite side = 32.6. Another side is 24.1.

A 39.4 ,   C 47.6 ,   B C 20.7  

Got questions? Get instant answers now!

Extensions

Find the radius of the circle in [link] . Round to the nearest tenth.

A triangle inscribed in a circle. Two of the legs are radii. The central angle formed by the radii is 145 degrees, and the opposite side is 3.
Got questions? Get instant answers now!

Find the diameter of the circle in [link] . Round to the nearest tenth.

A triangle inscribed in a circle. Two of the legs are radii. The central angle formed by the radii is 110 degrees, and the opposite side is 8.3.

10.1

Got questions? Get instant answers now!

Questions & Answers

what does mean opportunity cost?
Aster Reply
what is poetive effect of population growth
Solomon Reply
what is inflation
Nasir Reply
what is demand
Eleni
what is economics
IMLAN Reply
economics theory describes individual behavior as the result of a process of optimization under constraints the objective to be reached being determined by
Kalkidan
Economics is a branch of social science that deal with How to wise use of resource ,s
Kassie
need
WARKISA
Economic Needs: In economics, needs are goods or services that are necessary for maintaining a certain standard of living. This includes things like healthcare, education, and transportation.
Kalkidan
What is demand and supply
EMPEROR Reply
deman means?
Alex
what is supply?
Alex
ex play supply?
Alex
Money market is a branch or segment of financial market where short-term debt instruments are traded upon. The instruments in this market includes Treasury bills, Bonds, Commercial Papers, Call money among other.
murana Reply
good
Kayode
what is money market
umar Reply
Examine the distinction between theory of comparative cost Advantage and theory of factor proportion
Fatima Reply
What is inflation
Bright Reply
a general and ongoing rise in the level of prices in an economy
AI-Robot
What are the factors that affect demand for a commodity
Florence Reply
price
Kenu
differentiate between demand and supply giving examples
Lambiv Reply
differentiated between demand and supply using examples
Lambiv
what is labour ?
Lambiv
how will I do?
Venny Reply
how is the graph works?I don't fully understand
Rezat Reply
information
Eliyee
devaluation
Eliyee
t
WARKISA
hi guys good evening to all
Lambiv
multiple choice question
Aster Reply
appreciation
Eliyee
explain perfect market
Lindiwe Reply
In economics, a perfect market refers to a theoretical construct where all participants have perfect information, goods are homogenous, there are no barriers to entry or exit, and prices are determined solely by supply and demand. It's an idealized model used for analysis,
Ezea
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply
Practice Key Terms 4

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




Source:  OpenStax, Precalculus. OpenStax CNX. Jan 19, 2016 Download for free at https://legacy.cnx.org/content/col11667/1.6
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Precalculus' conversation and receive update notifications?

Ask