Cosine Calculator
Trigonometric cosine calculator
Law of cosine formulas
- a2 = b2 + c2 - 2bc * cos(A)
- b2 = a2 + c2 - 2ac * cos(B)
- c2 = a2 + b2 - 2ab * cos(C)
Degrees
Radians
cos
0
0
1
30
π / 6
√ 3 / 2
45
π / 4
1 / √ 2
60
π / 3
1 / 2
90
π / 2
0
180
π
-1
270
3π / 2
0
360
2π
1