Memorizing the Unit Circle and Trig Ratios

What is the equation of the unit circle?

• x^2 + y = 1

• x^2 + y^2 = 0

• x^2 + y^2 = 1

• x^2 - y^2 = 1

Tags

CCSS.HSG.GPE.A.1

What are the coordinates of the point on the unit circle along the positive x-axis?

• (0, 1)

• (0, -1)

• (1, 0)

• (-1, 0)

Tags

CCSS.HSF.TF.A.2

What is the radian value at the initial side of the positive X-axis?

• 2π

• π/2

• 0

• π

Which point corresponds to π/4 in the unit circle?

• (√2/2, √2/2)

• (1/2, √3/2)

• (√3/2, 1/2)

• (0, 1)

Tags

CCSS.HSF.TF.A.2

What is the tangent of π/6?

• √3

• 1

• 0

• √3/3

Tags

CCSS.HSF.TF.A.2

What is the x-coordinate for the angle 7π/6 on the unit circle?

• -1/2

• -1

• √3/2

• -√3/2

Tags

CCSS.HSF.TF.A.2

What is the y-coordinate for the angle 3π/4 on the unit circle?

• -√2/2

• -1/2

• 1/2

• √2/2

Tags

CCSS.HSF.TF.A.2

What is the sine of π/6?

• √3/2

• 1

• 1/2

• √2/2

Tags

CCSS.HSF.TF.A.2

What is the cosine of 3π?

• -1

• 0

• 1

• √3/2

Tags

CCSS.HSF.TF.A.2

What happens to the tangent value at 3π/2?

• Undefined

• 1

• 0

• √3/3

Tags

CCSS.HSF.TF.A.2