
Understanding the Unit Circle and Reference Triangles

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

Mia Campbell
FREE Resource
Standards-aligned
Read more
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the radius of the unit circle?
1 unit
3 units
0.5 units
2 units
Tags
CCSS.HSF.TF.A.2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the unit circle, what is the value of cosine theta if the terminal side intersects at point (x, y)?
x
y
1/x
1/y
Tags
CCSS.HSF.TF.A.2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which quadrant has both cosine and sine values positive for a 30-degree reference angle?
First
Third
Fourth
Second
Tags
CCSS.HSF.TF.A.2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In which quadrant is the cosine value negative and sine value positive for a 30-degree reference angle?
First
Second
Third
Fourth
Tags
CCSS.HSF.TF.A.2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of triangle is formed by a 45-degree reference angle in the unit circle?
Obtuse
Isosceles right
Scalene
Equilateral
Tags
CCSS.HSF.TF.A.2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In which quadrant are both x and y negative for a 45-degree reference angle?
First
Third
Fourth
Second
Tags
CCSS.HSF.TF.A.2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For a 60-degree reference angle, which quadrant has a positive x and negative y?
First
Second
Third
Fourth
Tags
CCSS.HSF.TF.A.2
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