Ta có : pt (\sqrt{3}\tan x -1)^2+(2\sin x-1)^2=0\Leftrightarrow $\begin{cases}\tan x=\frac{1}{\sqrt{3}} \\ \sin x= \frac{1}{2}\end{cases} :)
Ta có : pt 3tan2⁡x+4sin2⁡x−23tan⁡x−4sin⁡x+2=0" style="position: relative;" tabindex="0" id="MathJax-Element-1-Frame" class="MathJax">(\sqrt{3}\tan x -1)^2+(2\sin x-1)^2=0\Leftrightarrow \begin{cases}\tan x=\frac{1}{\sqrt{3}} \\ \sin x= \frac{1}{2}\end{cases} :)
Ta có : pt (\sqrt{3}\tan x -1)^2+(2\sin x-1)^2=0\Leftrightarrow
$\begin{cases}\tan x=\frac{1}{\sqrt{3}} \\ \sin x= \frac{1}{2}\end{cases} :)