I wish to create a calculated question giving two side (variables {a} and {b} ) and they are required to find the angle. I can see how convert and angle to the sine E.g. Sine of 60 degree = 0.8660 , but I do not know what formula I need to use to convert the sine to and angle E.g given 0.866 = ???
Previous formula to convert to sine is (sin(deg2rad({a})) , but I cannot convert back to degrees.
Hope this is clear. Thanks
