The Unit Circle

Created by etetet103 

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Unit Circle in 45 degrees

0, 45, 90, 135, 180, 225, 270, 315, 360

Unit Circle in pi/4

0, pi/4, pi/2, 3pi/4, pi, 5pi/4, 3pi/2, 7pi/4, 2pi

Unit Circle in 30 degrees

0, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 360

Unit Circle in pi/6

0, pi/6, pi/3, pi/2, 2pi/3, 5pi/6, pi, 7pi/6, 4pi/3, 3pi/2, 5pi/3, 11pi/6, 2pi

45 degrees (radians)

pi/4

90 degrees (radians)

pi/2

135 degrees (radians)

3pi/4

180 degrees (radians)

pi

225 degrees (radians)

5pi/4

270 degrees (radians)

3pi/2

315 degrees (radians)

7pi/4

360 degrees (radians)

2pi

Find coterminal angles?

add or subtract 360/2pi

Quadrant I Reference angle

theta

Quadrant II Reference angle

180-theta

Quadrant III Reference angle

theta-180

Quadrant IV Reference angle

360-theta

Converting degrees to radian

*pi/180

Converting radian to degrees

*180/pi

45 degrees (coordinates)

(root2/2, root2/2)

90 degrees (coordinates)

(0,1)

135 degrees (coordinates)

(-root2/2, root2/2)

180 degrees (coordinates)

(-1,0)

225 degrees (coordinates)

(-root2/2,-root2/2)

270 degrees (coordinates)

(0,-1)

315 degrees (coordinates)

(root2/2,-root2/2)

0/360 degrees (coordinates)

(1,0)

30 degrees (coordinates)

(root3/2,1/2)

60 degrees (coordinates)

(1/2,root3/2)

120 degrees (coordinates)

(-1/2,root3/2)

150 degrees (coordinates)

(-root3/2,1/2)

210 degrees (coordinates)

(-root3/2,-1/2)

240 degrees (coordinates)

(-1/2,-root3/2)

300 degrees (coordinates)

(1/2,-root3/2)

330 degrees (coordinates)

(root3/2,-1/2)

30 degrees (radians)

pi/6

60 degrees (radians)

pi/3

120 degrees (radians)

2pi/3

150 degrees (radians)

5pi/6

210 degrees (radians)

7pi/6

240 degrees (radians)

4pi/3

300 degrees (radians)

5pi/3

330 degrees (radians)

11pi/6

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