In a right triangle, if one of the acute angles is , what expression represents the measure of the other acute 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
2. Trigonometric Functions on Right Triangles
Trigonometric Functions on Right Triangles
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
If is congruent to in two right triangles, which of the following statements is true about the ratios of their corresponding sides?
A
The ratios of the lengths of the sides opposite and are equal in both triangles.
B
The ratios of the sides adjacent to and are always different.
C
The triangles must be congruent.
D
The hypotenuses of both triangles must be equal.
Verified step by step guidance1
Recognize that if two angles (angle 2 and angle 6) in two right triangles are congruent, then the triangles are similar by the Angle-Angle (AA) similarity postulate.
Recall that similar triangles have corresponding angles equal and their corresponding sides are proportional, meaning the ratios of corresponding sides are equal.
Identify the sides relative to the given angles: the side opposite the angle, the side adjacent to the angle, and the hypotenuse.
Understand that because the triangles are similar, the ratio of the lengths of the sides opposite angle 2 and angle 6 will be equal, as will the ratios of the sides adjacent to these angles and the hypotenuses.
Conclude that the correct statement is that the ratios of the lengths of the sides opposite angle 2 and angle 6 are equal in both triangles, while the triangles do not necessarily have equal hypotenuses or must be congruent.
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Trigonometric Functions on Right Triangles practice set

