In a right triangle, one leg has length , the hypotenuse has length , and is the length of the other leg. What is the value of ?
Table of contents
- 0. Review of College Algebra4h 45m
- 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
Multiple Choice
Given a right triangle with one leg of length and hypotenuse of length , what is the approximate length of the other leg?
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Verified step by step guidance1
Identify the given elements of the right triangle: one leg has length 5, and the hypotenuse has length 13.
Recall the Pythagorean theorem, which states that in a right triangle, the square of the hypotenuse (c) equals the sum of the squares of the legs (a and b): \(c^2 = a^2 + b^2\).
Assign the known values to the formula: let the unknown leg be \(b\), so \$13^2 = 5^2 + b^2$.
Calculate the squares of the known sides: \$169 = 25 + b^2$.
Isolate \(b^2\) by subtracting 25 from both sides: \(b^2 = 169 - 25\), then find \(b\) by taking the square root of \(b^2\).
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