Unit 6 Trig Review

Front

What is the definition of the unit circle?

Back

The unit circle is a circle with a radius of 1 centered at the origin (0,0) in the coordinate plane, used to define trigonometric functions.

Front

In which quadrant is the x-coordinate positive and the y-coordinate negative?

Back

Quadrant IV.

Front

What is the angle measure in radians for a full rotation?

Back

A full rotation is 2π radians.

Front

Back

Front

Back

The coordinates are (0, -1).

Front

In which quadrant is the angle 3 radians located?

Back

Quadrant II.

Front

What is the sine of an angle in Quadrant II?

Back

The sine of an angle in Quadrant II is positive.

Front

What is the cosine of an angle in Quadrant III?

Back

The cosine of an angle in Quadrant III is negative.

Front

What is the tangent of an angle in Quadrant IV?

Back

The tangent of an angle in Quadrant IV is negative.

Front

How do you determine the quadrant of an angle given in radians?

Back

To determine the quadrant, find the equivalent angle between 0 and 2π and check the signs of the sine and cosine.