0 15-00, Δ ΔY , 1- 0-00 15-00 .
|
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, , , R () (.12).
12 - R ()
. 202, = 77810, Y = 13315 : α = 48-65, = 3250.
:
1. R i (15-00 R). R = 11-35, (15-00-R) = 3-65
2. a i (IV : + Δ; -Δy).
3. Δ, Δy:
) Δx = * sin (15-R), () NQ+1. ³ (15-R) S S NQ+1 : Δx = + 1210.
) Δy = * sin R, ( ), R S S , NQ+1
Δy = - 3010.
: Δ Δy :
- R (15-R) Sin,
0,1 < |Δy| ( |Δx|) < ;
- R (15-R) S ,
0,01 < |Δy| ( |Δx|) < 0,1;
- R (15-R) S , 0,001 < |Δy| ( |Δx|)< 0,01.
4. :
= + Δx = 79 020; Y = Y + Δy = 10 305.
. () .
.9 XA YA; XB YB . () .
: = ∆ = ; = ∆y = Y Y. (1)
.9.
, , : , (), . () = α.
|
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tg α = (Y Y) / ( ) = ∆y / ∆x; (2)
AB = (Y Y) / sin α = ∆y / sin α = ∆y * cosec α, α > 450
(3)
AB = ( ) / cos α = ∆ / cos α = ∆ * sec α, α < 450.
(), α. α () . .13:
(1) = α;
(2) = 1800 α2;
(3) = 1800 + α3;
(4) = 3600 - α4.
13 -
(1), (2), (3) , ∆x ∆y. (2) . (3) . , , .
(), .