
Trigonometric Functions and Reference Angles

Interactive Video
•
Mathematics
•
9th - 12th Grade
•
Hard
Standards-aligned

Amelia Wright
FREE Resource
Standards-aligned
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of using reference triangles in trigonometry?
To measure angles in a triangle
To simplify complex numbers
To determine exact trigonometric function values
To convert angles from radians to degrees
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When sketching -8π/3 radians, in which direction do we rotate?
Downwards
Upwards
Clockwise
Counterclockwise
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the reference angle for -8π/3 radians?
π/2 radians
π/3 radians
π/4 radians
π/6 radians
Tags
CCSS.HSG.SRT.C.7
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the side lengths of a 60-degree reference triangle?
(1, 2, √3)
(2, 1, √3)
(1, √3, 2)
(1, 1, √2)
Tags
CCSS.HSG.SRT.C.7
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which trigonometric function is the reciprocal of cosine?
Secant
Tangent
Sine
Cosecant
Tags
CCSS.HSF.TF.A.2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the cosine of the reference angle in the given problem?
-√3/2
1/2
√3/2
-1/2
Tags
CCSS.HSF.TF.A.2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the sine of the reference angle in the problem?
-√3/2
√3/2
1/2
-1/2
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