Finding trignometric inverse in gcalctool in linux

Most linux distros come with gcalctool as the default calculator. It is not obvious on first look as how to find the inverse of trignometric terms in gcalctool. Here is how we can do it.

This is the default look of the gcalctool.



Let us say we want to find arcsin(0.9)

Type sin or press the sin button



Now press the up arrow, which is the second button from left in the first row and then type -1.



Now press the up arrow again to come out of superscript mode.

Now enter the value 0.9 and press enter.



And we have the angle in degrees for arcsin(0.9)