Unit Circle Review

Formulas

100

This trigonometry ratio uses the fraction adjacent over hypotenuse.

What is cosine(x)

200

This equation is a way of finding the x-coordinate on a unit circle.

What is x=cos(theta)

300

This trigonometry ratio uses the fraction opposite over adjacent

What is Tangent

400

This equation gives us the y-coordinate on the unit circle.

What is y=sin(theta)

500

DAILY DOUBLE

This equations allows you to convert degrees to radians

Coordinates

100

sin(90) degrees

What is 1

200

sin(150) degrees

What is 1/2 or .5

300

DAILY DOUBLE

The cosine of 3*pi/2.

400

The sine of 4*pi/3.

What is - sqrt(3)/2

500

sine of 7*pi/4.

What is -sqrt(2)/2

Vocab

100

This word is the longest side of a right triangle

What is the hypotenuse

200

The word is the measure of one radius on the arc on the circle

What is a radian

300

This word is the greek letter used in mathematics to describe an angle measure

What is theta

400

The word is a unit of measure for an angle

What is a degree or radian

500

This definition means a circle with a radius of 1 

What is a Unit Circle

Radians

100

The conversion from this radian measure to degrees is 180 degrees.

What is pi/6.

200

The conversion from this degrees measure to radians is 2*pi/3.

What is 120 degrees

300

The conversion from this radian measure to degrees is 135 degrees.

What is 3*pi/4.

400

The conversion from this degree measure to radians is 11*pi/6.

What is 330 degrees

500

The conversion from this radian measure to degrees is 390 degrees.

What is 13*pi/6.

Slice of Pi

100

This is the number of slices of pi/2 in a circle

What is 4

200

This is the number of slices of pi in a circle

What is 2

300

This is the number of slices of pi/6 in a circle

What is 12

400

This is the number of slices of pi/12 in 90 degree rotation of a circle

What is 6

500

This is the number of slices of pi/3 in 540 degree rotation around a circle

What is 9