Unit Circle Flashcard

Front

In which quadrants is the sine function positive?

Back

I and II

Front

What is the reference angle for 265°?

Back

85°

Front

What is the reference angle for -215°?

Back

35°

Front

In which quadrants is the cosine function positive?

Back

I and IV

Front

In which quadrants is the tangent function positive?

Back

I and III

Front

Define the unit circle.

Back

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

Front

What is the sine of 90°?

Back

1

Front

What is the cosine of 0°?

Back

1

Front

What is the tangent of 45°?

Back

1

Front

What is the reference angle for 150°?

Back

30°