Turtle and Observer Command
setxcor-towards angle distance number

Sets the x-coordinate of the turtle distance away at angle angle from the caller to number.

Examples:

setxcor-towards 0 1 5 sets the x-coordinate of the turtle one unit above and one unit to the right of the caller to 5.

Related commands:
setycor-towards xcor ycor setx sety setxy xcor-towards ycor-towards