Ответ: A).
Объяснение:
[tex]y=\sqrt{cosx-\frac{\sqrt{3} }{2} } \\ D(x):cosx-\frac{\sqrt{3} }{2}\geq 0\\ cosx\geq\frac{\sqrt{3} }{2} \\ -\frac{\pi }{6}+2\pi n\leq x\leq \frac{\pi }{6}+2\pi n,n\in Z[/tex]
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Ответ: A).
Объяснение:
[tex]y=\sqrt{cosx-\frac{\sqrt{3} }{2} } \\ D(x):cosx-\frac{\sqrt{3} }{2}\geq 0\\ cosx\geq\frac{\sqrt{3} }{2} \\ -\frac{\pi }{6}+2\pi n\leq x\leq \frac{\pi }{6}+2\pi n,n\in Z[/tex]