Unit Circle Practice

What is the radius of the unit circle?

• 1

• 2

• 10

• It varies.

Tags

CCSS.HSF.TF.A.2

The sine of any angle on the unit circle is the y-coordinate.

• True

• False

Tags

CCSS.HSF.TF.A.2

CCSS.HSF.TF.A.3

CCSS.HSF.TF.C.8

The cosine of any angle on the unit circle is the y-coordinate.

• True

• False

Tags

CCSS.HSF.TF.A.2

When drawing a right triangle from any point on the unit circle to the x-axis, the hypotenuse is equal to one.

• True

• False

Tags

CCSS.HSF.TF.A.2

• 1

• 1/2

• √3/2

• √2/2

Tags

CCSS.HSF.TF.A.2

What is the  $\cos\left(\frac{3\pi}{4}\right)$  ?

• √3/2

• -√3/2

• √2/2

• -√2/2

Tags

CCSS.HSF.TF.A.2

 $\cos\left(\frac{4\pi}{3}\right)$  

• 1/2

• -1/2

• √3/2

• -√3/2

Tags

CCSS.HSF.TF.A.2

 $\cos\left(\frac{5\pi}{4}\right)$  

• -√3/2

• -1/2

• -√2/2

• √2/2

Tags

CCSS.HSF.TF.A.2

Convert 150⁰ to radians

• 5π/6

• 3π/4

• 7π/6

• 2π/3

What is 7π/4 radians in degrees?

• 300

• 135

• 315

• 45