Unit Circle Trig Practice- CW

Front

What is the definition of the unit circle?

Back

The unit circle is a circle with a radius of 1 centered at the origin (0,0) in the coordinate plane. It is used to define trigonometric functions.

Tags

CCSS.HSF.TF.A.2

Front

What are the coordinates of the point on the unit circle at 0°?

Back

(1, 0)

Tags

CCSS.HSF.TF.A.2

Front

What is the value of sin(90°)?

Back

1

Tags

CCSS.HSF.TF.A.2

Front

What is the value of cos(180°)?

Back

-1

Tags

CCSS.HSF.TF.A.2

Front

In which quadrants is cos(θ) positive?

Back

Quadrants I and IV.

Tags

CCSS.HSF.TF.A.2

Front

In which quadrants is sin(θ) negative?

Back

Quadrants III and IV.

Tags

CCSS.HSF.TF.A.2

Front

What is the value of tan(45°)?

Back

1

Tags

CCSS.HSG.SRT.C.7

Front

What is the relationship between sin(θ) and cos(θ) in the unit circle?

Back

sin(θ) = y-coordinate, cos(θ) = x-coordinate of the point on the unit circle.

Tags

CCSS.HSF.TF.A.2

Front

What is the value of sin(30°)?

Back

1/2

Tags

CCSS.HSG.SRT.C.7

Front

What is the value of cos(60°)?

Back

1/2

Tags

CCSS.HSF.TF.A.2