r = |z| = √((-2)² + (-2)²) = 2√2
cos φ = - 1/√2
sinφ = -1/√2
значит φ = 5π/4
Тогда z = -2 -2 * i = 2√2 * (cos (5π/4) + i * sin(5π/4))
r = |z| = √((-2)² + (-2)²) = 2√2
cos φ = - 1/√2
sinφ = -1/√2
значит φ = 5π/4
Тогда z = -2 -2 * i = 2√2 * (cos (5π/4) + i * sin(5π/4))