Online Cos function calculator, cosine function calculator, can calculate the cosine function value of an angle through Cos(X).
Cosine is a trigonometric function. In a right-angled triangle, the ratio of the adjacent side to the hypotenuse of any acute angle ∠A is called the cosine of ∠A, denoted as CosA.
Cos(x) function value table:
x(°) x(rad) cos(x)
180° π -1
150° 5π/6 -√3/2
135° 3π/4 -√2/2
120° 2π/3 -1/2
90° π/2 0
60° π/4 √2/2
30° π/6 √3/2
0° 0 1