() , .
.9 Y . , . , , , , , , .
9 -
.9 ( ) ( ), . ∆ ∆. ֳ . = - . = - .
∆ ∆ ,
xB = xA + D;
yB = yA + Dy.
():
D = cos ();
Dy = sin ().
, :
xB = xA+ cos ();
yB = yA+ sin ().
.
, (1) (.10) , 0 900. , , . , α.
.10.
10 -
(2)
α2 = 1800 (2),
α2 ;
(2) .
(3)
α3 = (3) - 1800
-
α4 = 3600 (4).
∆ ∆ , , , . .11 ∆ ∆ , , , .
11 -
1 , 1, 1 . 0 900 , ∆ ∆ . 2 . 90 1800 , , ∆ , ∆ .
|
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. ∆ , ∆ .
.
.
г (), . ∆ ∆ , , , , (Ͳ).