ftan(var x, var f)
Tangent function, multiplied by the factor f. Faster
and more precise than calculating f * tan(x) explicitely.
Parameters:
x - angle in degrees.
f - scale factor.
Returns:
f * tan(x)
Speed:
FastExample:
x = ftan(180,10); // x is 0
x = ftan(89,1000); // x is 57289.961
See also:
tan,
atan