( 8)
- ( 71)- 1 2 , d1 d2 , 23 (- ), g, 90. : .
. 71. (- , - )
, , . £ 0,001 , - . (.73) :
= (1 + 2) / 2,
1=d1 . (tg nB + tg nH) = 20.4 . (tg 1713¢ + tg 254¢) = 7.15 ,
2=d2 . (tg nB + tg nH) = 18.5 . (tg 1758¢ + tg 253¢) = 7.00 ,
=0,001 = 7
1=b1 .d1 / = -89,5¢.20400 /3438¢= -531
1=1 - 90 =650¢
2=b2 .d2 / =-32¢.18500 /3438¢= +172
2=2 - 90 =8308¢
. 73.
:
1, 2, 1, 2 (.74). , , .
.74. ( 1:5)