Arccos Calculator – Online Inverse Cosine Calculator. Enter the value between 1 to -1 in the below box and enter the “Calculate” button.
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
| y | Arccos(y) | |
|---|---|---|
| degrees | radians | |
| -1 | 180° | π |
| -0.8660254 | 150° | 5π/6 |
| -0.7071068 | 135° | 3π/4 |
| -0.5 | 120° | 2π/3 |
| 0 | 90° | π/2 |
| 0.5 | 60° | π/3 |
| 0.7071068 | 45° | π/4 |
| 0.8660254 | 30° | π/6 |
| 1 | 0° | 0 |