Помогите решить
1. [tex]cos(\frac{\pi }{5}-2x)\leq \frac{1}{2}[/tex]
2.[tex]cos 3x\leq \frac{\sqrt{3} }{2}[/tex]
1. [tex]cos(\frac{\pi }{5}-2x)\leq \frac{1}{2}[/tex]
2.[tex]cos 3x\leq \frac{\sqrt{3} }{2}[/tex]
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решение на фотографиях