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SIN
SIN returns the sine of an angle measured in radians, producing a value between -1 and 1. For degree inputs, wrap with RADIANS: =SIN(RADIANS(angle)). It is used in wave modeling, engineering, and geometric calculations.
Excel
=SIN(RADIANS(A2))Google Sheets
=SIN(RADIANS(A2))✓
Verified example
Computed by a real spreadsheet engine on the sample data below.
| Angle (degrees) | Sine |
| 0 | |
| 30 | |
| 45 | |
| 90 |
=SIN(RADIANS(A2))→0
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How it works
- 1A2 contains the angle in degrees (e.g. 30).
- 2RADIANS(A2) converts degrees to radians before passing to SIN.
- 3SIN(RADIANS(30)) = 0.5 because the sine of 30° is exactly 0.5.