Ответы и объяснения

  • Участник Знаний
2012-11-30T20:35:20+04:00

1)2cosx = √2

cos x = √2/2

x  = π/4

2)sin(5x-π/2) = 1/2

5x - π/2 = π/6

5x = 2π/3

x = 2π/15

3)tg 3x = 1

   3x = π/4

   x = π/12