5.5 Trig Values of any angles

Front

What is the definition of the unit circle?

Back

A circle with a radius of 1 centered at the origin (0,0) in the coordinate plane.

Front

What is the value of sin(0°)?

Back

0

Front

What is the value of cos(90°)?

Back

0

Front

What is the value of tan(45°)?

Back

1

Front

What is the reference angle for 150 degrees?

Back

30 degrees

Front

In which quadrants is sin θ positive?

Back

Quadrants I and II.

Front

In which quadrants is cos θ negative?

Back

Quadrants II and III.

Front

What is the value of sin(30°)?

Back

1/2

Front

What is the value of cos(60°)?

Back

1/2

Front

What is the value of tan(-30°)?

Back

-√3/3