> The angle measure of 1/400 of the circle is called the gradient (not to be confused with the gradient of multivariate calculus). I don't know where it is used, but my calculator converts between degrees, gradients, and radians.

Then there are 'grades,' used on roads and probably elsewhere. For example, occasionally one sees signs warning of "6% grade next 10 miles" or something similar. What is grade?

And that calculator button made trig class a dream. Converting among degrees, gradients, and radians and among decimals, fractions, and minutes/seconds never required more than half a second or so.

gab"No, a literal dream. I fell asleep."by