Formulas, etc
Trig functions
Working backwards
Radian conversion
More trig functions
100
This trigonometry ratio uses the fraction adjacent over hypotenuse.
What is cosine(x)
100
sin 90 degrees
What is 1
100

These two angles between 0 and 360 degrees have a sine of -1/2

What is 210° and 330°

100
The conversion from this radian measure to degrees is 180 degrees.
What is pi/6.
100

cosine (12pi/3)

What is 1?

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

These two angles between 0 and 2pi radians have a cosine of \sqrt{2}/2

What is pi/4 and 7pi/4

200
The conversion from this radian measure to degrees is 90 degrees.
What is pi/2.
200

cos(5pi/4)

What is \sqrt{2}/2?

300

This trigonometry ratio uses the fraction opposite over hypotenuse.

What is sin(theta)

300

The cosine of 3*pi/2.

What is 0

300

This angle between 0 and 360 degrees has a sine of -1/2 and a cosine of -sqrt{3}/2

What is 240°

300
The conversion from this radian measure to degrees is 135 degrees.
What is 3*pi/4.
300

sin(5pi/3)

What is -\sqrt{3}/2?

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

These two angles between 0 and 720° have a sine of 1

What is 90° and 450°

400
The conversion from this radian measure to degrees is 330 degrees.
What is 11*pi/6.
400

cos(5pi)

What is -1?

500

These are the possible values that sine can equal

What is [-1, 1]

500
sine of 7*pi/4.
What is -sqrt(2)/2
500

These two angles in between -2pi and 0 have a cosine of -sqrt{3}/2

What is -5pi/6, -7pi/6

500
The conversion from this radian measure to degrees is 390 degrees.
What is 13*pi/6.
500
cos (-pi/4)

What is sqrt{2}/2?

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