Given a right triangle where one leg has length , the other leg has length , and the hypotenuse is , what is the value of ?
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
Multiple Choice
In a right triangle, two interior angles each measure . Which of the following statements is true about this triangle?
A
This is possible and the triangle is isosceles.
B
This is not possible because the sum of the angles would be greater than .
C
This is possible and the third angle measures .
D
This is not possible because the sum of the angles would be less than .
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Verified step by step guidance1
Recall that the sum of the interior angles in any triangle is always \$180^\circ$.
In a right triangle, one of the angles is always \$90^\circ$ by definition.
If two interior angles each measure \$34^\circ\(, add these two angles together: \)34^\circ + 34^\circ = 68^\circ$.
Add the right angle to this sum: \$68^\circ + 90^\circ = 158^\circ$.
Since the total sum of these angles is \$158^\circ\(, which is less than \)180^\circ\(, having two angles of \)34^\circ\( in a right triangle is possible, and the third angle would be \)180^\circ - 158^\circ = 22^\circ$.
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