Arccosine to Degrees Reference Values
Calculate the inverse cosine and return the principal angle in degrees.
Table of Contents
Reference Value Index
This page lists 15 reference values for quick browsing and lookup.
All Reference Values
- -1 Cosine Value = 180 deg
- -0.95 Cosine Value = 161.805128 deg
- -0.9 Cosine Value = 154.158067 deg
- -0.8 Cosine Value = 143.130102 deg
- -0.75 Cosine Value = 138.590378 deg
- -0.5 Cosine Value = 120 deg
- -0.25 Cosine Value = 104.477512 deg
- 0 Cosine Value = 90 deg
- 0.25 Cosine Value = 75.522488 deg
- 0.5 Cosine Value = 60 deg
- 0.75 Cosine Value = 41.409622 deg
- 0.8 Cosine Value = 36.869898 deg
- 0.9 Cosine Value = 25.841933 deg
- 0.95 Cosine Value = 18.194872 deg
- 1 Cosine Value = 0 deg
Reference Table
| Cosine Value | acos(x) in Degrees |
|---|---|
| -1 Cosine Value | 180 deg |
| -0.95 Cosine Value | 161.805128 deg |
| -0.9 Cosine Value | 154.158067 deg |
| -0.8 Cosine Value | 143.130102 deg |
| -0.75 Cosine Value | 138.590378 deg |
| -0.5 Cosine Value | 120 deg |
| -0.25 Cosine Value | 104.477512 deg |
| 0 Cosine Value | 90 deg |
| 0.25 Cosine Value | 75.522488 deg |
| 0.5 Cosine Value | 60 deg |
| 0.75 Cosine Value | 41.409622 deg |
| 0.8 Cosine Value | 36.869898 deg |
| 0.9 Cosine Value | 25.841933 deg |
| 0.95 Cosine Value | 18.194872 deg |
| 1 Cosine Value | 0 deg |
Frequently Asked Questions
Frequently asked questions for Arccosine to Degrees and its reference values.
What does the Arccosine to Degrees calculator do?
It helps with finding angles from known cosine values in geometry and vector math.
What formula does the Arccosine to Degrees calculator use?
Angle (degrees) = acos(x) × 180 / π, principal range 0° to 180°.
What inputs are valid?
Input must be between -1 and 1 inclusive for real-number results.
When would I use this?
finding angles from known cosine values in geometry and vector math
Methodology and Review
Each row on this page links to a value detail page derived from the same conversion data file as the main calculator and reference table. This reduces inconsistencies across page variants.
Editorial metadata and structured data are rendered across the converter page and linked value pages. Review policies are documented in our review process and editorial policy.