task/2949668 перевести в <em>тригонометрическую</em> форму z = 6i
z = 6iz = 6i = 6(cos2πk + i sin2πk) * * * i =√(-1) , i² = * * *
1600:4*3=1200(м/мин)-ласточка
1200:10*7=840(м/мин)-ястреб
4 8/11 + 5 7/11 = 52/11+62/11= 114/11=10 4/11
7 5/9 - 2 8/9 = 68/9 - 26/9 = 42/9 = 4 6/9 = 4 2/3
7 - 3/8 = 56/8-3/8=53/8= 6 5/8
10 - 3 7/15=150/15 - 52/15 = 98/15 = 6 8/15