In the bedding plane we find ripple marks pitching 58 degrees east.
Pitch is the angle between a line in a plane and the horizontal, measured in the plane.
Plot the strike of the plane. Draw a small symbol to indicate the dip direction and the pitch of the line. Rotate the overlay to bring the strike to the north-south axis, and plot the great circle representing the plane. Count off the pitch from the appropriate end of the great circle. The sketch symbol you drew in step 1 will show which end to start from.