Angles and Unit Circle
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Supplementary Angles
a+b=180
Complementary Angles
a+b=90
0 radians
0 degrees
acute angle
0<o<90
2pi/3 radians
120 degrees
3pi/4 radians
135 degrees
5pi/6 radians
150 degrees
pi radians
180 degrees
7pi/6 radians
210 degrees
5pi/4 radians
225 degrees
4pi/3 radians
240 degrees
3pi/2 radians
270 degrees
pi/6 radians
30 degrees
5pi/3 radians
300 degrees
7pi/4 radians
315 degrees
11pi/6 radians
330 degrees
2pi radians
360 degrees
pi/4 radians
45 degrees
pi/3 radians
60 degrees
pi/2 radians
90 degrees
Obtuse Angle
90<o<180