
Reference Angles and Triangles in the Unit Circle
Authored by Zamira Muslli
Mathematics
8th Grade
CCSS covered
Used 1+ times

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18 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What are the coordinates of the point on the unit circle corresponding to an angle of 45 degrees?
(1, 0)
(0.5, 0.5)
(0, 1)
(0.707, 0.707)
Tags
CCSS.HSF.TF.A.2
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the sine of the angle 30 degrees in the unit circle?
0
2
0.5
1
Tags
CCSS.HSF.TF.A.2
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Find the reference angle for an angle of 210 degrees in the unit circle.
210
180
150
30
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Solve the equation sin(x) = 0.5 using the unit circle.
60 degrees or π/3 radians
45 degrees or π/4 radians
30 degrees or π/6 radians
90 degrees or π/2 radians
Tags
CCSS.HSF.TF.B.7
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Graph the function y = cos(x) using the unit circle.
The graph of y = cos(x) using the unit circle is a wave-like curve that oscillates between -1 and 1.
The graph of y = cos(x) using the unit circle is a constant value of 1.
The graph of y = cos(x) using the unit circle is a parabola.
The graph of y = cos(x) using the unit circle is a straight line.
Tags
CCSS.HSF-IF.C.7E
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What are the coordinates of the point on the unit circle corresponding to an angle of 60 degrees?
(0.866, 0.5)
(0.5, 0.866)
(0.5, 0.5)
(0.866, -0.5)
Tags
CCSS.HSF.TF.A.2
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the cosine of the angle 45 degrees in the unit circle?
1
0
1/sqrt(2)
sqrt(2)
Tags
CCSS.HSF.TF.A.2
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