Excel's trig functions can be used to find the sine, cosine, and tangent of an angle. These tutorials include step by step examples of using Excel's trig functions.
The SIN function gives you the sine of an angle measured in radians.
The COS function gives you the cosine of an angle measured in radians.
The TAN function gives you the tangent of an angle measured in radians.
Excel's, trig functions use angles measured in radians not degrees. The RADIANS function converts angles measured in degrees to radians.
The DEGREES function converts angles measured in radians to degrees.