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
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![This image features a mathematical problem involving right triangles. It depicts a right triangle alongside an inscribed right triangle. Detailed elements of the image and accompanying problem are as follows:
### Diagram Description:
- There is a larger right-angle triangle with one side labeled as 10.
- An inscribed right-angle triangle shares vertices with the larger triangle. The hypotenuse of this inscribed triangle is labeled as 8.
- One of the legs of the smaller triangle is labeled as 6.
- The shared sides opposite the right angles in both triangles are labeled 'a' and 'b'.
### Problem Statement:
Below the diagram, there are two expressions requiring solutions:
- \( a = \)
- \( b = \)
Each expression is followed by a dotted rectangular box where the solver is expected to fill in the values of \( a \) and \( b \).
### Educational Explanation:
This problem can be solved using the Pythagorean theorem. In a right-angled triangle, the theorem states that the square of the hypotenuse (the triangle's longest side) is equal to the sum of the squares of the other two sides.
#### Steps to Solve:
1. **Identify right-angled triangles:**
- Larger triangle: Hypotenuse = 10.
- Smaller inscribed triangle: Hypotenuse = 8, one leg = 6.
2. **Use the Pythagorean theorem to find the unknown side 'a':**
\[
a^2 = 8^2 - 6^2
\]
\[
a^2 = 64 - 36
\]
\[
a^2 = 28
\]
\[
a = \sqrt{28}
\]
\[
a = 2\sqrt{7}
\]
3. **Use the Pythagorean theorem to find the unknown side 'b' of the larger triangle utilizing one leg as \( a = 2\sqrt{7} \) and hypotenuse 10:**
\[
b^2 = 10^2 - (2\sqrt{7})^2
\]
\[
b^2 = 100 - 28
\]
\[
b^2 = 72
\]
\[
b = \sqrt{72}
\]
\[
b](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F31f394f2-9cc9-4c1e-bb28-d49c0bf01e44%2F4e556458-f122-4045-97ba-1351ddae3f70%2F6wqfy5wm_processed.jpeg&w=3840&q=75)
Transcribed Image Text:This image features a mathematical problem involving right triangles. It depicts a right triangle alongside an inscribed right triangle. Detailed elements of the image and accompanying problem are as follows:
### Diagram Description:
- There is a larger right-angle triangle with one side labeled as 10.
- An inscribed right-angle triangle shares vertices with the larger triangle. The hypotenuse of this inscribed triangle is labeled as 8.
- One of the legs of the smaller triangle is labeled as 6.
- The shared sides opposite the right angles in both triangles are labeled 'a' and 'b'.
### Problem Statement:
Below the diagram, there are two expressions requiring solutions:
- \( a = \)
- \( b = \)
Each expression is followed by a dotted rectangular box where the solver is expected to fill in the values of \( a \) and \( b \).
### Educational Explanation:
This problem can be solved using the Pythagorean theorem. In a right-angled triangle, the theorem states that the square of the hypotenuse (the triangle's longest side) is equal to the sum of the squares of the other two sides.
#### Steps to Solve:
1. **Identify right-angled triangles:**
- Larger triangle: Hypotenuse = 10.
- Smaller inscribed triangle: Hypotenuse = 8, one leg = 6.
2. **Use the Pythagorean theorem to find the unknown side 'a':**
\[
a^2 = 8^2 - 6^2
\]
\[
a^2 = 64 - 36
\]
\[
a^2 = 28
\]
\[
a = \sqrt{28}
\]
\[
a = 2\sqrt{7}
\]
3. **Use the Pythagorean theorem to find the unknown side 'b' of the larger triangle utilizing one leg as \( a = 2\sqrt{7} \) and hypotenuse 10:**
\[
b^2 = 10^2 - (2\sqrt{7})^2
\]
\[
b^2 = 100 - 28
\]
\[
b^2 = 72
\]
\[
b = \sqrt{72}
\]
\[
b
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