What is cos(15°) in Degrees?
The cos of 15 degrees (cos 15°) is 0.965926. Convert 15° to radians (0.261799 rad) and see full trigonometric table values.
Exact Answer
cos(15°) = 0.965926
sin(15°)
0.258819
cos(15°)
0.965926
tan(15°)
0.267949
Angle in Radians
0.2618 rad
Step-by-Step Solution: cos(15°) = 0.965926
Step 1
Convert Degrees to Radians
Multiply 15° by π/180: 15 × (π / 180) ≈ 0.261799 radians.
15° = 0.261799 rad
Step 2
Evaluate cos(15°)
Using the unit circle or trigonometric ratio, cos(15°) = 0.965926.
cos(15°) = 0.965926
Summary & Alternative Representations
| Property / Format | Value |
|---|---|
| sin(15°) | 0.258819 |
| cos(15°) | 0.965926 |
| tan(15°) | 0.267949 |
| Angle in Radians | 0.2618 rad |
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Frequently Asked Questions
What is 15 degrees in radians?
15 degrees equals 0.261799 radians.