Arccos Calculator – Online Inverse Cosine Calculator

Arccos Calculator – Online Inverse Cosine Calculator. Enter the value between 1 to -1 in the below box and enter the “Calculate” button.

arccos
  
Angle in Degrees:
°
Angle in Radians:
rad
Calculation:
Related

Arcsin Calculator

Arccos Calculator - Inverse Cosine Calculator Online

Arccos Calculator – Online Inverse Cosine Calculator

Defination: Arccosine defines as the inverse function of cos(y).

Formula: arccos(y) = cos-1(y)

Firstly, let’s take some examples to understand the process/calculation and formula.

Example: Find the Arccos of 0.6

arccos(0.6) = cos-1(0.6)
= 53.13010235 degrees or 0.92729522 radians

Calculation:

arccos(0.6) = cos-1(0.6) = 53° 7′ 48.368″
= 53.13010235° + k×360° (k=..-1,0,1,..)
= -306.86989765°, 53.13010235°, 413.13010235°, ..
= 0.92729522rad + k×2π (k=..-1,0,1,..)
= -1.70483276π, 0.29516724π, 2.29516724π, ..

Arccos Table

yArccos(y)
degreesradians
-1180°π
-0.8660254150°5π/6
-0.7071068135°3π/4
-0.5120°2π/3
090°π/2
0.560°π/3
0.707106845°π/4
0.866025430°π/6
10