## Arccos Calculator

Arccos(x) calculator and Inverse cosine calculator are available here.

To calculate the arccos(x) on the calculator, you need to follow the following steps:

- Enter the values in the space provided.
- Select the result type of degrees (°) or the radians (rad) in the combo box.
- Then lastly hit the = button to calculate the final result.

[Math_m_Arccos_Calculator]

## Arccos definition

The arccosine function is called as the inverse function of the cos(x).

arccos(*x*) = cos^{-1}(*x*)

For instance,

If the cosine of 90° is : 0

cos(90°) = 0

Then the arccos of 0 is 90°:

arccos(0) = cos^{-1}(0) = 90°

**Arccos table**

Find the values from the table provided below!

X | arccos(x) | |
---|---|---|

radians | degrees | |

-1 | π | 180° |

-0.8660254 | 5π/6 | 150° |

-0.7071068 | 3π/4 | 135° |

-0.5 | 2π/3 | 120° |

0 | π/2 | 90° |

0.5 | π/3 | 60° |

0.7071068 | π/4 | 45° |

0.8660254 | π/6 | 30° |

1 | 0 | 0° |