In a right triangle , if the length of is units and angle is , what is the length of side opposite angle ?
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
- OLD 1. Angles and the Trigonometric Functions Coming soon
- OLD 2. Trigonometric Functions graphs, Inverse Trigonometric Functions Coming soon
- OLD 3. Trigonometric Identities and Equations Coming soon
- OLD 4. Laws of Sines, Cosines and Vectors Coming soon
- OLD 5. Complex Numbers, Polar Coordinates and Parametric Equations Coming soon
- NEW (not used) 7. Laws of Sines, Cosines and Vectors Coming soon
- NEW (not used) 8. Vectors Coming soon
- NEW(not used) 9. Polar equations Coming soon
- NEW (not used) 11. Graphing Complex Numbers Coming soon
2. Trigonometric Functions on Right Triangles
Solving Right Triangles
Multiple Choice
Which set of three angles could represent the interior angles of a triangle?
A
, ,
B
, ,
C
, ,
D
, ,
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Verified step by step guidance1
Recall the fundamental property of the interior angles of a triangle: the sum of the three interior angles must be exactly \(180^\circ\).
For each given set of angles, add the three angles together using the formula \(\text{Sum} = \alpha + \beta + \gamma\), where \(\alpha\), \(\beta\), and \(\gamma\) are the angles in degrees.
Check the first set: \(60^\circ + 60^\circ + 60^\circ\). Calculate their sum to see if it equals \(180^\circ\).
Check the second set: \(90^\circ + 90^\circ + 0^\circ\). Calculate their sum and verify if it equals \(180^\circ\).
Repeat the process for the third and fourth sets: \(90^\circ + 45^\circ + 60^\circ\) and \(100^\circ + 40^\circ + 50^\circ\), respectively, to determine which sets satisfy the triangle angle sum property.
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