1.  x₁ = ρ·cos φ₁; y₁ = ρ·sin φ₁;
2.  φ₁ = φ - α;
3.  x₁ = ρ·cos (φ - α); y₁ = ρ·sin (φ - α);
4.  x₁ = ρ·cos φ·cos α + ρ·sin φ·sin α;  y₁ = ρ·sin φ·cos α - ρ·cos φ·sin α;
5.  x₁ = x·cos α + y·sin α; y = - x·sin α + y·cos α.

Можно перейти на страницу 13.