Unit Circle, Sine and Cosine Functions

What is the coordinates of the center of a unit circle?

• (1,1)

• (1,0)

• (0,1)

• (0,0)

Tags

CCSS.HSF-IF.C.7E

What is the measure of the radius of a unit circle?

• 1

• 0

• 2

• 1/2

Tags

CCSS.HSF.TF.A.2

If the value of theta is pi, then what is the value of cosine?

• 0

• -1

• 1

• 1/2

Tags

CCSS.HSF.TF.A.2

Evaluate sin 270deg

• 0

• 1

• -1

• 1/2

Tags

CCSS.HSF.TF.A.2

If the reference angle if 30 deg, then 1/2 is located at ----

• y

• x

• r

• (0,0)

Tags

CCSS.HSF.TF.A.2

If a 60deg angle in standard position, then what is the possible coordinates of P in the unit circle?

• (1/2,sqrt3/2)

• (sqrt2/2,sqrt2/2)

Tags

CCSS.HSF.TF.A.2

If the reference angle is 45degrees, then the right triangle is ______.

• Scalene

• Isosceles

• Equilateral

• Equiangular

Tags

CCSS.HSG.CO.C.10

The value of any cosine depends on the abscissa in the unit circle.

• True

• False

Tags

CCSS.HSF.TF.A.2

Which of the following angles have the same coordinates in the unit but with different signs(location in (quadrants)?

• 315 deg and 225 deg

• 315 deg and 210 deg

• 150deg and 315 deg

• 360 deg and 200 deg

Tags

CCSS.HSF.TF.A.2

Which of the following is an example of special triangles?

• 50-40-90

• 20-70-90

• 30-60-90

• 35-55-90

Tags

CCSS.HSG.CO.C.10