Unit Circle

Front

What is the value of tan(7π/4)?

Back

-1

Front

What is the value of cos(π)?

Back

-1

Front

What is the value of sin(7π/6)?

Back

-1/2

Front

What is the value of sec(3π/2)?

Back

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Front

Define the unit circle.

Back

A circle with a radius of 1 centered at the origin of a coordinate plane.

Front

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

Back

(1, 0)

Front

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

Back

(0, 1)

Front

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

Back

(-1, 0)

Front

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

Back

(0, -1)

Front

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

Back

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