Trig Review 3rd

Front

What is the value of cos(5π/3)?

Back

1/2

Front

Find one positive and one negative coterminal angle to 5π/4.

Back

Positive: 13π/4, Negative: -11π/4

Front

What is the value of sin(60°)?

Back

√3/2

Front

What is the radius of the unit circle?

Back

1

Front

What is the value of cos(π)?

Back

-1

Front

Define coterminal angles.

Back

Coterminal angles are angles that share the same terminal side when drawn in standard position, differing by multiples of 2π.

Front

What is the sine of an angle in a right triangle?

Back

The sine of an angle is the ratio of the length of the opposite side to the length of the hypotenuse.

Front

What is the cosine of an angle in a right triangle?

Back

The cosine of an angle is the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

What is the tangent of an angle in a right triangle?

Back

The tangent of an angle is the ratio of the length of the opposite side to the length of the adjacent side.

Front

What is the relationship between sine and cosine?

Back

sin(θ) = cos(90° - θ) for any angle θ.