>>pre-calc: unit circle memorization<<
what is the cosine of 180 degrees?
-1
what is the cosine of 120 degrees (60 degree reference angle)?
-1/2
what is 360 degrees in radians?
2π
what is 120 degrees (60 degree reference angle) in radians?
2π/3
what is 270 degrees in radians?
3π/2
what is 135 degrees (reference angle 45) in radians?
3π/4
what is 240 degrees in radians (reference angle 60)?
4π/3
what is 300 degrees in radians (reference angle 60)?
5π/3
what is 225 degrees in radians (reference angle 45)?
5π/4
what is 150 degrees (reference angle 30) in radians?
5π/6
what is 315 degrees in radians (reference angle 45)?
7π/4
what is 210 degrees in radians (reference angle 30)?
7π/6
what is the tangent of 150 degrees (reference angle 30)?
(in degrees) -0.577
what is the tangent of 330 degrees (reference angle 30)?
(in degrees) -0.577
what is the tangent 135 degrees (reference angle 45)?
(in degrees) -1
what is the tangent of 315 degrees (reference angle 45)?
(in degrees) -1
what is the tangent of 120 degrees (60 degree reference angle)?
(in degrees) -1.73 or -√3
what is the tangent of 300 degrees (reference angle 60)?
(in degrees) -1.73 or -√3
what is the tangent of 180 degrees?
(in degrees) 0
what is the tangent of 360 degrees?
(in degrees) 0
what is the tangent of 210 degrees (reference angle 30)?
(in degrees) 0.577
what is the tangent of 30 degrees?
(in degrees) 0.577
what is the tangent of 225 degrees (reference angle 45)?
(in degrees) 1
what is the tangent of 45 degrees?
(in degrees) 1
what is the tangent of 240 degrees (reference angle 60)?
(in degrees) 1.73 or √3
what is the tangent of 60 degrees?
(in degrees) 1.73 or √3
what is the cosine of 315 degrees (reference angle 45)?
(√2)/2
what is the cosine of 45 degrees?
(√2)/2
what is the sine of 135 degrees (reference angle 45)?
(√2)/2
what is the sine of 45 degrees?
(√2)/2
what is the cosine of 30 degrees?
(√3)/2
what is the cosine of 330 degrees (reference angle 30)?
(√3)/2
what is the sine of 120 degrees (60 degree reference angle)?
(√3)/2
what is the sine of 60 degrees?
(√3)/2
what is the cosine of 135 degrees (reference angle 45)?
-(√2)/2
what is the cosine of 225 degrees (reference angle 45)?
-(√2)/2
what is the sine of 225 degrees (reference angle 45)?
-(√2)/2
what is the sine of 315 degrees (reference angle 45)?
-(√2)/2
what is the cosine of 150 degrees (reference angle 30)?
-(√3)/2
what is the cosine of 210 degrees (reference angle 30)?
-(√3)/2
what is the sine of 240 degrees (reference angle 60)?
-(√3)/2
what is the sine of 300 degrees (reference angle 60)?
-(√3)/2
what is the sine of 270 degrees?
-1
what is the cosine of 240 degrees (reference angle 60)?
-1/2
what is the sine of 210 degrees (reference angle 30)?
-1/2
what is the sine of 330 degrees (reference angle 30)?
-1/2
what is 0 degrees in radians?
0
what is the cosine of 270 degrees?
0
what is the cosine of 90 degrees?
0
what is the sine of 0 degrees?
0
what is the sine of 180 degrees?
0
what is the sine of 360 degrees?
0
what is the tangent of 0?
0
what is the cosine of 0 degrees?
1
what is the cosine of 360 degrees?
1
what is the sine of 90 degrees?
1
what is the cosine of 300 degrees (reference angle 60)?
1/2
what is the cosine of 60 degrees?
1/2
what is the sine of 150 degrees (reference angle 30)?
1/2
what is the sine of 30 degrees?
1/2
what is 330 degrees in radians (reference angle 30)?
11π/6
what is the tangent of 270 degrees?
undefined
what is the tangent of 90 degrees?
undefined
what is 180 degrees in radians?
π
what is 90 degrees in radians?
π/2
what is 60 degrees in radians?
π/3
what is 45 degrees in radians?
π/4
what is 30 degrees in radians?
π/6