( 11 ) 



Berekening van de ordinaat p van het raakpunt .... (HI). 



P = 275 x V **"' (42 2Q ' 28 ' *" 3 0) COS ' (42 2 f 28 ' " i " 3 



cos. 42 20' 28' X cos. 30 



of p = 275 x V ( cos - 7 ^ 20 ' 28> X cos - 12 20> 28 ' 



cos. 42 20' 28' x cos. 30 

 Mftptw. 72 20' 28" = 9.48194 /.cos. 42 20' 28* = 9.86874 

 /. cos. 12 20' 28* = 9.98985 /. CO s. 30 = 9.93753 



9.47179 I. cos. |? x cos. = 9.80627 

 /.V/(co*.( +( S)cos. (-/?))= 9.73589 

 /. cos. cos. /? = 9.80627 

 9.92962 



/. 0.275 = 9.43933 



log. p = 9.36895 



p = 0.23386 



Berekening van q volgens formule (ivVpsIu ^O'Jfl no! 

 aludriul ea'jglo*) TSIS.I r= ^ .ao-j x S.9Ji.^ 4- =? 

 9 = 0.275 x tang. 42 20' 28* x 9 

 log. 0.275 = 9.43933 

 /. tang. 42 20' 28* /. tang. = 9.95964 

 log. 8 = log. 0.55401 = 9.74332 

 log. q = 9.14249 

 g = 0.13883 



- ; ..^ 8^10.6 -^ i<? .wo .i 



Berekening van het getal m. 



w = cot. 30 X co^. 22 20' 

 1. co/30 = 0,23856 

 /. cot. 22 20' = 0.38636 



^ 



/o^r. ?re = 0.62492 

 m = 4.2162 



x S.dlJS.^ f 



2 * 



