Exact Value Trig Speed (Flashcard 3) degrees : 20sec

Front

What is the value of sin(225°)?

Back

-√2 / 2

Front

What is the value of sin(90°)?

Back

1

Front

What is the value of sin(330°)?

Back

-1/2

Front

What is the value of tan(180°)?

Back

0

Front

What is the sine of an angle in the unit circle?

Back

The y-coordinate of the point on the unit circle corresponding to that angle.

Front

What is the cosine of an angle in the unit circle?

Back

The x-coordinate of the point on the unit circle corresponding to that angle.

Front

What is the tangent of an angle in terms of sine and cosine?

Back

tan(θ) = sin(θ) / cos(θ) for θ where cos(θ) ≠ 0.

Front

What is the reference angle for 225°?

Back

The reference angle is 45°.

Front

What is the value of sin(θ) when θ is in the third quadrant?

Back

sin(θ) is negative in the third quadrant.

Front

What is the value of cos(90°)?

Back

0