Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
Related questions
Topic Video
Question
![Title: Analyzing a Right Triangle
### Problem Statement:
Given a right triangle ABC with the following dimensions:
- Side AC = 7 units
- Side BC = 6 units
### Required:
Determine the following:
1. The measure of angle ∠B.
2. The measure of angle ∠A.
3. The length of side AB.
### Diagram:
The diagram depicts a right triangle labelled ABC. The right angle is at vertex C. The lengths of sides AC and BC are 7 units and 6 units, respectively.
### Solution:
1. **Calculate the Hypotenuse (AB):**
Using the Pythagorean theorem for right-angled triangles:
\[
AB^2 = AC^2 + BC^2
\]
Substituting the known values:
\[
AB^2 = 7^2 + 6^2 \\
AB^2 = 49 + 36 \\
AB^2 = 85 \\
AB = \sqrt{85} \\
AB \approx 9.22 \text{ units} \\
\]
2. **Measure of Angle ∠B:**
Since we know the values of the opposite side (BC) and the adjacent side (AC), we can use the tangent function:
\[
\tan(B) = \frac{\text{opposite}}{\text{adjacent}} \\
\tan(B) = \frac{6}{7}
\]
Using an inverse tangent function (arctan) to find the measure of angle B:
\[
B = \arctan\left(\frac{6}{7}\right) \\
B \approx 40.60^\circ
\]
3. **Measure of Angle ∠A:**
Since the sum of the angles in any triangle is 180 degrees and one angle is 90 degrees:
\[
A + B = 90^\circ \\
A = 90^\circ - B \\
A = 90^\circ - 40.60^\circ \\
A \approx 49.40^\circ
\]
### Conclusion:
- ∠B ≈ 40.60°
- ∠A ≈ 49.40°
- The length of side AB ≈ 9.22 units.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F818cebe8-28f5-4924-8c1d-64af36f4f5c5%2Fb20e2e27-276b-4dc3-ba9f-44e7399ed95f%2Ft8lbwke.jpeg&w=3840&q=75)
Transcribed Image Text:Title: Analyzing a Right Triangle
### Problem Statement:
Given a right triangle ABC with the following dimensions:
- Side AC = 7 units
- Side BC = 6 units
### Required:
Determine the following:
1. The measure of angle ∠B.
2. The measure of angle ∠A.
3. The length of side AB.
### Diagram:
The diagram depicts a right triangle labelled ABC. The right angle is at vertex C. The lengths of sides AC and BC are 7 units and 6 units, respectively.
### Solution:
1. **Calculate the Hypotenuse (AB):**
Using the Pythagorean theorem for right-angled triangles:
\[
AB^2 = AC^2 + BC^2
\]
Substituting the known values:
\[
AB^2 = 7^2 + 6^2 \\
AB^2 = 49 + 36 \\
AB^2 = 85 \\
AB = \sqrt{85} \\
AB \approx 9.22 \text{ units} \\
\]
2. **Measure of Angle ∠B:**
Since we know the values of the opposite side (BC) and the adjacent side (AC), we can use the tangent function:
\[
\tan(B) = \frac{\text{opposite}}{\text{adjacent}} \\
\tan(B) = \frac{6}{7}
\]
Using an inverse tangent function (arctan) to find the measure of angle B:
\[
B = \arctan\left(\frac{6}{7}\right) \\
B \approx 40.60^\circ
\]
3. **Measure of Angle ∠A:**
Since the sum of the angles in any triangle is 180 degrees and one angle is 90 degrees:
\[
A + B = 90^\circ \\
A = 90^\circ - B \\
A = 90^\circ - 40.60^\circ \\
A \approx 49.40^\circ
\]
### Conclusion:
- ∠B ≈ 40.60°
- ∠A ≈ 49.40°
- The length of side AB ≈ 9.22 units.
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 3 images

Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, geometry and related others by exploring similar questions and additional content below.Recommended textbooks for you

Elementary Geometry For College Students, 7e
Geometry
ISBN:
9781337614085
Author:
Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:
Cengage,

Elementary Geometry for College Students
Geometry
ISBN:
9781285195698
Author:
Daniel C. Alexander, Geralyn M. Koeberlein
Publisher:
Cengage Learning

Elementary Geometry For College Students, 7e
Geometry
ISBN:
9781337614085
Author:
Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:
Cengage,

Elementary Geometry for College Students
Geometry
ISBN:
9781285195698
Author:
Daniel C. Alexander, Geralyn M. Koeberlein
Publisher:
Cengage Learning