- 108 - 



= -^ [ 1 — sin A . sinB ) u. 

 MoC" = I — cosA — sinAfsinB — sinA) | . — 



^" = — cosA — sin A (sin B — sinA) . 



r p d^ 



-\- — cosB — sinB(sinA — sinB) . -r- 



_j2 r n f|- 



= "27 1 f (sinA — sin Bf == -n" (1 — sinA. sinB) 



woraus folgt : 



MgP^ = M2C, = M,P, . w. z. b. w. 



