Cosine of Radians
Calculate cos(x) from an angle entered in radians.
Table of Contents
0 rad =
1 Cosine Value
Representative value from the Cosine of Radians reference table.
Reference Values
Browse 25 reference values with individual detail pages for quick lookup.
Cosine of Radians
Calculate cos(x) from an angle entered in radians.
Calculated Result
—
Reference Table
Use this complete table for quick lookup and internal linking to specific value pages.
| Angle (Radians) | cos(x) |
|---|---|
| -3.141593 rad | -1 Cosine Value |
| -2.879793 rad | -0.965926 Cosine Value |
| -2.617994 rad | -0.866025 Cosine Value |
| -2.356194 rad | -0.707106 Cosine Value |
| -2.094395 rad | -0.5 Cosine Value |
| -1.832596 rad | -0.258819 Cosine Value |
| -1.570796 rad | 0 Cosine Value |
| -1.308997 rad | 0.258819 Cosine Value |
| -1.047198 rad | 0.5 Cosine Value |
| -0.785398 rad | 0.707107 Cosine Value |
| -0.523599 rad | 0.866025 Cosine Value |
| -0.261799 rad | 0.965926 Cosine Value |
| 0 rad | 1 Cosine Value |
| 0.261799 rad | 0.965926 Cosine Value |
| 0.523599 rad | 0.866025 Cosine Value |
| 0.785398 rad | 0.707107 Cosine Value |
| 1.047198 rad | 0.5 Cosine Value |
| 1.308997 rad | 0.258819 Cosine Value |
| 1.570796 rad | 0 Cosine Value |
| 1.832596 rad | -0.258819 Cosine Value |
| 2.094395 rad | -0.5 Cosine Value |
| 2.356194 rad | -0.707106 Cosine Value |
| 2.617994 rad | -0.866025 Cosine Value |
| 2.879793 rad | -0.965926 Cosine Value |
| 3.141593 rad | -1 Cosine Value |
Frequently Asked Questions
Common questions about Cosine of Radians, formulas, and typical use cases.
What does the Cosine of Radians calculator do?
It helps with evaluating cosine values in radian-based math and signal calculations.
What formula does the Cosine of Radians calculator use?
cos(x) returns the cosine of an angle in radians.
What inputs are valid?
Any finite radian angle is valid.
When would I use this?
evaluating cosine values in radian-based math and signal calculations
Methodology and Review
This page combines a live calculator, precomputed reference values, and FAQ content from the same conversion definition to reduce mismatch between calculator output and lookup tables.
Editorial metadata (author, reviewer, and update date) is rendered on the page and in structured data. See our editorial policy, review process, and corrections policy.
For compliance-sensitive work, verify final values against project requirements, governing standards, and manufacturer documentation.