).
: XA, YA, αAB, dA
: XB, YB
.11.
:
XB=XA+dAB. cos αAB=XA+ΔX,
YB=YA+dAB. sin αAB=YA+ΔY,
ΔX ΔY - , .. .
).
: XA, YA, XB, YB.
: αAB, dAB.
:
αAB - r = arctg (ΔY/ΔX),
: d. cos α + XA = XB,
d. sin α + YB = YB.
:
1. , XA=YA=100, αAB=315, dAB=100 (sin 315 = -0,70711, cos 315 =0,70711).
: XB=XA+dAB. cosαAB=170,71 ,
YB=YA+dAB. sin αAB= 29,29 .
2. , X=Y=1000, X=1100, Y=900.
:
α→ r=arctg{(YC-YB)/(XC-XB)}=45 ,
α=360 -45=315,
( )
( ) () .
"", "".
.
1. :
ƒh=Σ(Σh)-(H.7 H.6)
:
ƒh=50 .
L .
, ,
n , , s , l (. 2), h :
h = s tgn + l - a.
. d .
, d=(Kn =) cos2 v. (146), :
h = (+) cos2 v tg v + i -
h = (1/2) ( +c) sin2 v + i-
v , . , i . in = v (147)
|
|
h = (1/2) ( + ) sin 2v. (79):
dh/dd= tg v; dh/dv=d/ cos2 v; dh / din=1; dh/dv=1;
(17),
mh:^2=md^2 tg v+d^2/ cos4 v * m2v/ p^2+ mi ^2+ mv ^2
mh . mi mv 1 . |v| <=5 tg v = v/p, cos v = 1. (79)
mh:^2=(v^2md^2+d2m2v) (1/ 2)