Question 1

Use the sine function to find A of a standard right triangle ABC given a = 11.23 m and c = 17.87 m. Round to the nearest 0.1°.

Accepted Answer

A) 38.9° 
B) 51.1° 
C) 57.9° 
D) 32.1° 
A) 38.9° 
B) 51.1° 
C) 57.9° 
D) 32.1°

Question 2

Use a calculator to find cos 31°. Round to four significant digits.

Accepted Answer

The answer of Use a calculator to find cos 31°....

Question 3

Given that sin 40° = 0.6428, which angle has the cosine value of 0.6428?

Accepted Answer

A) 140° 
B) 40° 
C) 130° 
D) 50° 
A) 140° 
B) 40° 
C) 130° 
D) 50°

Question 4

Determine the degree measure of angle 8 if sin 8 = 0.7342, rounding to the nearest tenth of a degree.

Accepted Answer

A) 0.8° 
B) 1.5° 
C) 47.2° 
D) 42.8° 
A) 0.8° 
B) 1.5° 
C) 47.2° 
D) 42.8°

Question 5

Use the cosine function to find B of a standard right triangle ABC given a = 42 m and c = 76 m. Round to the nearest 0.1°.

Accepted Answer

A) 28.9° 
B) 56.5° 
C) 61.1° 
D) 33.5° 
A) 28.9° 
B) 56.5° 
C) 61.1° 
D) 33.5°

Question 6

Use the sine function to find length b of right triangle ABC given c = 17.4 ft and B = 23°. Round to four significant digits.

Accepted Answer

A) 6.799 ft 
B) 44.53 ft 
C) 16.02 ft 
D) 18.90 ft 
A) 6.799 ft 
B) 44.53 ft 
C) 16.02 ft 
D) 18.90 ft

Question 7

Use a calculator to find the tan 53°. Round to four significant digits.

Accepted Answer

The answer of Use a calculator to find the tan...

Question 8

In right triangle ABC with right angle C, find the indicated part. Round to the nearest 0.1°.
Find B if a = 12 m and c = 20 m.

Accepted Answer

The answer of In right triangle ABC with right angle...

Question 9

Determine the degree measure of 8 if sin 8 = 0.7022 rounded to the nearest tenth.

Accepted Answer

A) 35.1° 
B) 0.8° 
C) 45.4° 
D) 44.6° 
A) 35.1° 
B) 0.8° 
C) 45.4° 
D) 44.6°

Question 10

In right triangle ABC with right angle C, find the indicated part. Round to the nearest 0.1°.
Find B if a = 10 m and c = 16 m.

Accepted Answer

The answer of In right triangle ABC with right angle...

Question 11

Find 8 to the nearest ten-thousandth of a radian if tan 8 = 1.0537.

Accepted Answer

The answer of Find 8 to the nearest ten-thousandth of...

Question 12

Use a calculator to find sin 0.9657. Round to four significant digits.

Accepted Answer

The answer of Use a calculator to find sin 0.9657....

Question 13

In right triangle ABC with right angle C, find the indicated part. Round to four significant digits. Find a if b = 9 dm and c = 14 dm.

Accepted Answer

The answer of In right triangle ABC with right angle...

Question 14

Use a calculator to find sin 42°28' rounded to the nearest ten-thousandth.

Accepted Answer

A) -0.9985 
B) 0.6752 
C) 1.0015 
D) 1.4811 
A) -0.9985 
B) 0.6752 
C) 1.0015 
D) 1.4811

Question 15

Find cos A to the nearest ten-thousandth if a = 14.5, b = 7.8, and c = 16.5.

Accepted Answer

A) 2.1154 
B) 0.8788 
C) 0.4727 
D) 1.1379 
A) 2.1154 
B) 0.8788 
C) 0.4727 
D) 1.1379

Question 16

Use the sine function to find length c of a standard right triangle ABC given b = 498 miles and B = 43.7°. Round to four significant digits.

Accepted Answer

A) 720.8 miles 
B) 688.9 miles 
C) 344.1 miles 
D) 21,760 miles 
A) 720.8 miles 
B) 688.9 miles 
C) 344.1 miles 
D) 21,760 miles

Question 17

In right triangle ABC with right angle C, find the indicated part. Round to four significant digits. Find c if A = 74.5° and a = 14 m.

Accepted Answer

The answer of In right triangle ABC with right angle...

Question 18

Determine the degree measure of angle 8 if cos 8 = 0.9106, rounding to the nearest tenth of a degree.

Accepted Answer

A) 24.4° 
B) 0.4° 
C) 65.6° 
D) 2.3° 
A) 24.4° 
B) 0.4° 
C) 65.6° 
D) 2.3°

Question 19

Use a calculator to find cos 0.1250. Round to four significant digits.

Accepted Answer

The answer of Use a calculator to find cos 0.1250....

Question 20

Use the cosine function to find the indicated part of triangle ABC. Round to four significant digits. Find c if A = 25° and b = 21 ft.

Accepted Answer

A) 19.03 ft 
B) 23.17 ft 
C) 0.04316 ft 
D) 49.69 ft 
A) 19.03 ft 
B) 23.17 ft 
C) 0.04316 ft 
D) 49.69 ft

Use the sine function to find A of a standard right triangle ABC given a = 11.23 m and c = 17.87 m. Round to the nearest 0.1°.

Use a calculator to find cos 31°. Round to four significant digits.

Given that sin 40° = 0.6428, which angle has the cosine value of 0.6428?

Determine the degree measure of angle 8 if sin 8 = 0.7342, rounding to the nearest tenth of a degree.

Use the cosine function to find B of a standard right triangle ABC given a = 42 m and c = 76 m. Round to the nearest 0.1°.

Use the sine function to find length b of right triangle ABC given c = 17.4 ft and B = 23°. Round to four significant digits.

Use a calculator to find the tan 53°. Round to four significant digits.

In right triangle ABC with right angle C, find the indicated part. Round to the nearest 0.1°. Find B if a = 12 m and c = 20 m.

Determine the degree measure of 8 if sin 8 = 0.7022 rounded to the nearest tenth.

In right triangle ABC with right angle C, find the indicated part. Round to the nearest 0.1°. Find B if a = 10 m and c = 16 m.

Find 8 to the nearest ten-thousandth of a radian if tan 8 = 1.0537.

Use a calculator to find sin 0.9657. Round to four significant digits.

In right triangle ABC with right angle C, find the indicated part. Round to four significant digits. Find a if b = 9 dm and c = 14 dm.

Use a calculator to find sin 42°28' rounded to the nearest ten-thousandth.

Find cos A to the nearest ten-thousandth if a = 14.5, b = 7.8, and c = 16.5.

Use the sine function to find length c of a standard right triangle ABC given b = 498 miles and B = 43.7°. Round to four significant digits.

In right triangle ABC with right angle C, find the indicated part. Round to four significant digits. Find c if A = 74.5° and a = 14 m.

Determine the degree measure of angle 8 if cos 8 = 0.9106, rounding to the nearest tenth of a degree.

Use a calculator to find cos 0.1250. Round to four significant digits.

Use the cosine function to find the indicated part of triangle ABC. Round to four significant digits. Find c if A = 25° and b = 21 ft.

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Exam 19: Right-Triangle Trigonometry

Use the sine function to find A of a standard right triangle ABC given a = 11.23 m and c = 17.87 m. Round to the nearest 0.1°.

Use a calculator to find cos 31°. Round to four significant digits.

Given that sin 40° = 0.6428, which angle has the cosine value of 0.6428?

Determine the degree measure of angle 8 if sin 8 = 0.7342, rounding to the nearest tenth of a degree.

Use the cosine function to find B of a standard right triangle ABC given a = 42 m and c = 76 m. Round to the nearest 0.1°.

Use the sine function to find length b of right triangle ABC given c = 17.4 ft and B = 23°. Round to four significant digits.

Use a calculator to find the tan 53°. Round to four significant digits.

In right triangle ABC with right angle C, find the indicated part. Round to the nearest 0.1°. Find B if a = 12 m and c = 20 m.

Determine the degree measure of 8 if sin 8 = 0.7022 rounded to the nearest tenth.

In right triangle ABC with right angle C, find the indicated part. Round to the nearest 0.1°. Find B if a = 10 m and c = 16 m.

Find 8 to the nearest ten-thousandth of a radian if tan 8 = 1.0537.

Use a calculator to find sin 0.9657. Round to four significant digits.

In right triangle ABC with right angle C, find the indicated part. Round to four significant digits. Find a if b = 9 dm and c = 14 dm.

Use a calculator to find sin 42°28' rounded to the nearest ten-thousandth.

Find cos A to the nearest ten-thousandth if a = 14.5, b = 7.8, and c = 16.5.

Use the sine function to find length c of a standard right triangle ABC given b = 498 miles and B = 43.7°. Round to four significant digits.

In right triangle ABC with right angle C, find the indicated part. Round to four significant digits. Find c if A = 74.5° and a = 14 m.

Determine the degree measure of angle 8 if cos 8 = 0.9106, rounding to the nearest tenth of a degree.

Use a calculator to find cos 0.1250. Round to four significant digits.

Use the cosine function to find the indicated part of triangle ABC. Round to four significant digits. Find c if A = 25° and b = 21 ft.

Review of Basic Concepts

Review of Fractions

Percents

Measurement

Signed Numbers and Powers of 10

Statistics

Linear Equations and Inequalities

Formulas, Proportion, and Variation

Linear Equations, Functions, and Inequalities in Two Variables

Systems of Linear Equations

Powers and Polynomials

Roots and Radicals

Factoring

Rational Expressions, Equations, and Inequalities

Quadratic and Other Nonlinear Equations and Inequalities

Exponential and Logarithmic Equations

Geometry

Triangles

Trigonometry With Any Angle

Filters