Решите уравнение и укажите корни, принадлежащие отрезку.
1. [tex]2sin^2x+cosx-1=0[/tex] [-5π; -4π]
2. [tex]2sin^2x-cosx-1=0[/tex] [3π; 4π]
1. [tex]2sin^2x+cosx-1=0[/tex] [-5π; -4π]
2. [tex]2sin^2x-cosx-1=0[/tex] [3π; 4π]
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