7 - (-) ()
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(. 1 )
1. , 4
, JavaScript
: .
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( ) , 1
D = 42h9
1.
-
D = 80h9 . 90°
d = 60H9 D = 60h7
X1, X2, X3 , X16 ,
: ( ) ?
, ,
D = 26h9 . 90°. = 10
D = 60h9