1.7.1 a - , ( ) . ³ 0 360. . a , a
a = a 180, (1.10)
, a > 180, 180, a< 180, - 180. .
1.7.2 璺 , .1.3.
1.3 -
1.7.3 0180. . .1.3, α = 147 ˚ 00'.
. ϳ 0.
1.7.4 a1-2. (1.10).
α = α + 180˚ = 147˚00' + 180˚00' = 327˚00'.
1.7.5
, (1.11)
(B - A), (XB - XA) () , ;
n = 1 XB - XA < 0; n = 2 XB - XA > 0.
1.7.6 , 36000¢.
1.8
1.8.1 A - . . 0 360.
1.8.2 , g d.
1.8.3 g - . d . : , . 1.4.
1.4
1.8.4 :
= α γ, (1.12)
α - ;
g - .
(), , (䒺), .
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. α = 147 ˚ 00' ¢, g = + 6 12¢ (, . .1.4),
= α + γ = 147˚00' + 6˚12' = 153˚12'.
1.8.5 :
= ( δ), (1.13)
- ;
δ - .
(), , (䒺), .
. = 15312¢; d = -224¢(, . .1.4),
= - (- δ) = 153˚12'-(- 2˚24')=155˚36'.