Formulas
Coordinates
Reference Angle
Radians
Applications
100
This trigonometry ratio uses the fraction adjacent over hypotenuse.
What is cosine(x)
100
sin 90 degrees
What is 1
100
The angle corresponding to this reference angle is 150 degrees.
What is 30 degrees.
100

The conversion from this radian measure to degrees is 30 degrees.

What is pi/6.

100

cos(-pi/3)

What is 1/2?

200
This equation is a way of finding the x-coordinate on a unit circle.
What is x=cos(theta)
200
sine of 150 degrees
What is 1/2 or .5
200
The angle corresponding to this reference angle is 45 degrees.
What is 45 degrees
200
The conversion from this radian measure to degrees is 90 degrees.
What is pi/2.
200

sin(7pi/6)

What is -1/2?

300

This trigonometry ratio uses the fraction opposite over adjacent.

What is tangent(theta)

300
DAILY DOUBLE
The cosine of 3*pi/2.
300
The angle corresponding to this reference angle is 240 degrees.
What is 60 degrees
300
The conversion from this radian measure to degrees is 135 degrees.
What is 3*pi/4.
300

tan(pi/2)

What is undefined?

400

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

What is y=sin(theta)

400
The sine of 4*pi/3.
What is - sqrt(3)/2
400
The angle corresponding to this reference angle is 2*pi/3.
What is 60 degrees ( or pi/3).
400
The conversion from this radian measure to degrees is 330 degrees.
What is 11*pi/6.
400

cos(15pi/6)

What is 0?

500

DAILY DOUBLE

How do you find positive and negative coterminal angles?

500
sine of 7*pi/4.
What is -sqrt(2)/2
500
The angle corresponding to this reference angle is 7*pi/4.
What is 45 degrees (or pi/4).
500
The conversion from this radian measure to degrees is 390 degrees.
What is 13*pi/6.
500

tan(3pi/4)

What is -1?

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