L=D*(2tgα/2)
L=800*(2tg1.5°)=800*(2*0.0262)≈800*0.0524≈41.92/кпк/
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L=D*(2tgα/2)
L=800*(2tg1.5°)=800*(2*0.0262)≈800*0.0524≈41.92/кпк/