Reference Angles and Triangles in the Unit Circle

Reference Angles and Triangles in the Unit Circle

8th Grade

18 Qs

quiz-placeholder

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Reference Angles and Triangles in the Unit Circle

Reference Angles and Triangles in the Unit Circle

Assessment

Quiz

Mathematics

8th Grade

Practice Problem

Easy

CCSS
HSF.TF.A.2, HSF.TF.B.7, HSF-IF.C.7E

+3

Standards-aligned

Created by

Zamira Muslli

Used 1+ times

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18 questions

Show all answers

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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