arctand function

[sashman]

i'm trying to calculate the tan of an angle in a program i'm making, but the only function in turing is arctan and arctand, but those are just inverse tan. arctand would give me the angle, but i already have the angle. What i need is the calculate the tan of an angle.


e.g. arctand (root(3)) = 60

what i need is tan (60) = root(3)

is ther a function in turing that's simply tan, or do i have to do make some wierd combination. thanks for your help.

[Cervantes]

Turing 4.0.5 has tan and tand. I'm not sure, but I seem to remember something about previous versions having tan, just that it's not documented.

Anyways, here's some math:

tan (theta) = sin (theta) / cos (theta)

sin (theta) = y/r
cos (theta) = x/r

sin (theta) / cos (theta) = (y/r) / (x/r) = (y/r) * (r/x) = y/x = tan (theta)

[sashman]

sweeet it works. thanks for the help