

Exploring the Unit Circle in Algebra 2
Interactive Video
•
Mathematics
•
6th - 10th Grade
•
Practice Problem
•
Hard
+3
Standards-aligned
Lucas Foster
FREE Resource
Standards-aligned
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the equation of the unit circle?
x^2 + y^2 = 1
x^2 + y^2 = 0
x^2 - y^2 = 1
x^2 + y = 1
Tags
CCSS.HSG.GPE.A.1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of the unit circle in trigonometry?
It is only used in advanced calculus.
It represents the solution to x^2 + y^2 = 0.
It is used to calculate the area of circles.
It helps in defining the sine and cosine functions.
Tags
CCSS.HSF.TF.A.2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the length of each leg in a 45-45-90 triangle used in the unit circle?
1/2
√2
1/√2
√2/2
Tags
CCSS.8.G.B.8
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you rationalize the denominator of √(1/2)?
Multiply by √2/√2
Divide by 2/2
Multiply by 1/2
No need to rationalize
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the coordinates at 30 degrees on the unit circle?
(√3/2, 1/2)
(1, 0)
(1/2, √3/2)
(√2/2, √2/2)
Tags
CCSS.HSF.TF.A.2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the hypotenuse length of triangles used in the unit circle?
2
1/2
√2
1
Tags
CCSS.5.G.A.1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the x-coordinate at 45 degrees on the unit circle?
1/2
√2/2
√3/2
0
Tags
CCSS.HSF.TF.A.2
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