Trigonometry 101

Cos explained from degrees to radians:
0° = 1
45° = 0.7071067
90° = 6.1232340
135° = -0.707107
180° = -1
225° = -0.707107
270° = -1.836970
315° = 0.7071068
360° = 1

Sin explained from degrees to radians:
0° = 0
45° = 0.7071068
90° = 1
135° = 0.7071068
180° = 1.2246468
225° = -0.7071068
270° = -1
315° = -0.7071068
360° = 0

Radians to degrees: radians * (180° / π)
Degrees to radians: degrees * (π / 180°)