ok here is the problem,

I need to draw a ellipse in 3d space, what i have for the ellipse is its r1, r2 (a, b) distances from center i also have an angle at witch the ellipse is inclined, delta.

Here is what i got in 2d for the ellipse:

x = a * cos(t)

y = b * sin(t)

what I'm obviously missing is the third dimension, any help is greatly appreciated. Thanks in advance.