Excel SIN Function

Summary

The Excel SIN function returns the sine of angle given in radians. To supply an angle to SIN in degrees, multiply the angle by PI()/180 or use the RADIANS function to convert to radians.

Purpose

Get the sine of an angle

Return value

Sine value

Syntax

=SIN (number)

Arguments

number - The angle in radians for which you want the sine.

Usage notes

The SIN function expects radians. To supply an angle to SIN in degrees, multiply the angle by PI()/180 or use the RADIANS function to convert to radians. For example, to get the SIN of 30 degrees, you can use either formula below:

=SIN(30*PI()/180)=SIN(RADIANS(30))