For some mental fun, try these values for the angle and see what observations you can make about the results:

76.34541

126.869896

137.50777

However, I find it a bit bothersome that the input field doesn't properly accept floats, and the floats get rounded unnecessarily. Please don't do that, or have an option to customize it.

Also, you miss the more obscure trigonometry values:

http://datagenetics.com/blog/march22017/index.html

Namely, to quote from the above page:

Versine, Vercosine, Coversine, Covercosine, Exsecant, Excosecant, Haversince, Havercosine, Hacoversine, Hacovercosine

You might also wish to expand this by adding, in addition to the already shown degrees & radians, the following angle measures:

* Gradian * Turns * Arcminutes/Arcseconds