Question

Tìm tất cả các nghiệm của phương trình : \(tanx+\sqrt{3}cotx-\sqrt{3}-1=0\) là :

A . \(\left[{}\begin{matrix}x=\frac{\Pi}{4}+k\Pi\\x=\frac{\Pi}{3}+k\Pi\end{matrix}\right.,k\in Z}\)

B . \(\left[{}\begin{matrix}x=-\frac{\Pi}{4}+k\Pi\\x=\frac{\Pi}{6}+k\Pi\end{matrix}\right.,k\in Z}\)

C . \(\left[{}\begin{matrix}x=\frac{\Pi}{4}+k2\Pi\\x=\frac{\Pi}{6}+k2\Pi\end{matrix}\right.,k\in Z}\)

D . \(\left[{}\begin{matrix}x=\frac{\Pi}{4}+k\Pi\\x=\frac{\Pi}{6}+k\Pi\end{matrix}\right.,k\in Z}\)

Answer 1

https://i.imgur.com/Zdtaxi4.jpg