
Understanding the Unit Circle and Trigonometry
Interactive Video
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
+7
Standards-aligned
Cara Kern
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16 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the radius of a unit circle?
10 units
0.5 units
2 units
1 unit
Tags
CCSS.HSG.C.B.5
CCSS.HSG.GPE.A.1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which coordinates correctly represent a point on the unit circle along the x-axis?
(-1, 0)
(0, 1)
(1, 0)
(0, -1)
Tags
CCSS.HSF.TF.A.3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What direction does a positive angle move in on the unit circle?
Counterclockwise
Clockwise
Upwards
Downwards
Tags
CCSS.HSF.TF.A.2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the coordinates of the intersection point of the terminal side of a positive angle theta with the unit circle?
(1, 0)
(0, 1)
(b, a)
(a, b)
Tags
CCSS.HSF.TF.A.3
CCSS.HSF.TF.C.8
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the cosine of an angle theta represent in the context of the unit circle?
The y-coordinate of the intersection point
The x-coordinate of the intersection point
The radius of the circle
The length of the tangent line
Tags
CCSS.HSF.TF.A.2
CCSS.HSF.TF.A.3
CCSS.HSF.TF.C.8
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the sine of an angle theta defined using the unit circle?
The x-coordinate of the intersection point
The length of the tangent line
The radius of the circle
The y-coordinate of the intersection point
Tags
CCSS.HSF.TF.A.2
CCSS.HSF.TF.A.3
CCSS.HSF.TF.C.8
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the length of the hypotenuse in the right triangle formed within the unit circle?
The same as the adjacent side
1 unit
2 units
The same as the opposite side
Tags
CCSS.HSF.TF.C.8
CCSS.HSG.SRT.C.6
CCSS.HSG.SRT.C.8
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