Table of contents
- 0. Review of College Algebra4h 43m
- 1. Measuring Angles40m
- 2. Trigonometric Functions on Right Triangles2h 5m
- 3. Unit Circle1h 19m
- 4. Graphing Trigonometric Functions1h 19m
- 5. Inverse Trigonometric Functions and Basic Trigonometric Equations1h 41m
- 6. Trigonometric Identities and More Equations2h 34m
- 7. Non-Right Triangles1h 38m
- 8. Vectors2h 25m
- 9. Polar Equations2h 5m
- 10. Parametric Equations1h 6m
- 11. Graphing Complex Numbers1h 7m
2. Trigonometric Functions on Right Triangles
Solving Right Triangles
Struggling with Trigonometry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
A right triangle has a hypotenuse of length units and one leg of length units. What is the length of the other leg of the triangle?
A
units
B
units
C
units
D
units
Verified step by step guidance1
Identify the given elements of the right triangle: the hypotenuse length \(c = 10\) units and one leg length \(a = 6\) units.
Recall the Pythagorean theorem, which relates the sides of a right triangle: \(a^2 + b^2 = c^2\), where \(b\) is the length of the other leg.
Substitute the known values into the Pythagorean theorem: \$6^2 + b^2 = 10^2$.
Calculate the squares of the known sides: \$36 + b^2 = 100$.
Isolate \(b^2\) by subtracting 36 from both sides: \(b^2 = 100 - 36\), then find \(b\) by taking the square root: \(b = \sqrt{64}\).
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Related Practice
Textbook Question
Solve each problem. (Source for Exercises 49 and 50: Parker, M., Editor, She Does Math, Mathematical Association of America.)Height of a Tower The angle of depression from a television tower to a point on the ground 36.0 m from the bottom of the tower is 29.5°. Find the height of the tower.
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Solving Right Triangles practice set

