wireless networking – How to angle wifi antenna on client device relative to line of sight to the AP?

I have a wifi AP and a network camera some distance away. The network camera has 2 antennas which can be pointed in different directions. The AP has no visible (movable) antennas. Relative to the line defined by the AP and the camera, how should the antennas be pointed? In other words, should I point an antenna directly toward the AP, or perpendicular to that, or something else?