Unit Circle

Front

What is the definition of a unit circle?

Back

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

Front

What is the radius of a unit circle?

Back

1

Front

Convert 180° to radians.

Back

π radians.

Front

What is the value of sin(90°)?

Back

1.

Front

What is the value of cos(0°)?

Back

1.

Front

What is the value of tan(45°)?

Back

1.

Front

What is the relationship between degrees and radians?

Back

180° is equivalent to π radians.

Front

What is the value of sec(π/2)?

Back

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Front

What is the value of csc(0°)?

Back

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Front

What is the value of cot(90°)?

Back

0.