I'm not good in trigonometry and need these functions to the script, preferably in pure mathematics.
Determining point given a point, distance and direction
(x, y, z, distance, direction)
Speed in one direction (find x, y-speed)
(direction, speed)
As said, I'm not good in trigonometry, I am very grateful for the help.
Thanks in advance.
PS. sorry for bad English, using automatic translation