The Orientations of the Giza pyramids and associated structures by Erin Nell and Clive Ruggles
The orientation of Menkaure's causeway is 0° 50´ North of East.
azimuth = 89° 10´
The mean azimuth of Khafre's causeway is 103° 29´ 30" North of East.
The Giza Mapping Project images might be distorted and in the Menkaure case the orientation in regards to East is reversed.