Basic Unit Circle

What is the value of sin π/6?

• 1/2

• 1/3

• √3/2

• 0

What is the value of cos π?

• 0

• 1

• -1

• 0.5

What is the value of cos π/3?

• 1/2

• 1/3

• √3/2

• 0

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

• (1, 0)

• (0, 1)

• (-1, 0)

• (0, -1)

What is the value of tan 90°?

• 0

• 1

• undefined

• infinity

What is the value of sin(π/4)?

• 1/2

• √2 / 2

• √3 / 2

• 0

What is the relationship between sine and cosine on the unit circle?

• sin(θ) = x-coordinate, cos(θ) = y-coordinate.

• sin(θ) = y-coordinate, cos(θ) = x-coordinate.

• sin(θ) = radius, cos(θ) = angle.

• sin(θ) = angle, cos(θ) = radius.

What are the coordinates of the point on the unit circle at 3π/2 radians?

• (0, 1)

• (1, 0)

• (0, -1)

• (-1, 0)

What is the value of tan π/4?

• 0

• 1

• √3

• ∞

What is the value of tan(π/3)?

• 1

• √3

• √2

• 0