L46A2 Understanding the Unit Circle HW

Front

What is the radius of a unit circle?

Back

1

Front

Based on the unit circle, what is the value of sin?

Back

y

Front

Based on the unit circle, what is the value of cos?

Back

x

Front

In which quadrants is sinθ positive?

Back

the 1st and 2nd quadrants

Front

What is sin(7π/6)?

Back

-1/2

Front

What is the equation of a unit circle?

Back

x^2 + y^2 = 1

Front

What is the value of tanθ in terms of sin and cos?

Back

tanθ = sinθ/cosθ

Front

What are the coordinates of the point at 90 degrees on the unit circle?

Back

(0, 1)

Front

What are the coordinates of the point at 180 degrees on the unit circle?

Back

(-1, 0)

Front

What are the coordinates of the point at 270 degrees on the unit circle?

Back

(0, -1)