Toán Lớp 11: tan( x – pi/3 ) = căn 3
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Toán Lớp 11: tan( x – pi/3 ) = căn 3
giúp với ạ
Comments ( 2 )
\tan x = \tan y \Leftrightarrow x = y + k\pi \,\,\,\,\left( {k \in Z} \right)\\
\tan \left( {x – \dfrac{\pi }{3}} \right) = \sqrt 3 \\
\Leftrightarrow \tan \left( {x – \dfrac{\pi }{3}} \right) = \tan \dfrac{\pi }{3}\\
\Leftrightarrow x – \dfrac{\pi }{3} = \dfrac{\pi }{3} + k\pi \\
\Leftrightarrow x = \dfrac{{2\pi }}{3} + k\pi \,\,\,\,\left( {k \in Z} \right)
\end{array}\)
$x-\dfrac{\pi}{3}=\dfrac{\pi}{3}+k\pi$