Math III - 7.4 DHQ (3rd) 12/10

Front

What is the value of cos(5π/6)?

Back

-√3/2

Front

Which angle measure corresponds to the ordered pair (1,0)?

Back

2π

Front

What is the value of tan(7π/4)?

Back

-1

Front

Define cosine in terms of a right triangle.

Back

Cosine is the ratio of the length of the adjacent side to the hypotenuse.

Front

What is the unit circle?

Back

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

Front

What is the value of sin(π/2)?

Back

1

Front

What is the relationship between sine and cosine?

Back

sin(θ) = cos(90° - θ) or sin(θ) = cos(π/2 - θ) in radians.

Front

What is the value of sin(3π/2)?

Back

-1

Front

Define tangent in terms of sine and cosine.

Back

Tangent is the ratio of sine to cosine: tan(θ) = sin(θ)/cos(θ).

Front

What is the value of cos(0)?

Back

1