Giải phương trình : \({\sin ^2}x + 2\sqrt 3 \sin x\cos x - {\cos ^2}x = - 2\).
A.\(x = \dfrac{\pi }{6} + k\pi \,\,\left( {k \in \mathbb{Z} } \right)\)
B.\(x = - \dfrac{\pi }{6} + k\pi \,\,\left( {k \in \mathbb{Z} } \right)\)
C.\(x = - \dfrac{\pi }{6} + k2\pi \,\,\left( {k \in \mathbb{Z} } \right)\)
D.\(x = \dfrac{\pi }{6} + k2\pi \,\,\left( {k \in \mathbb{Z} } \right)\)
A.\(x = \dfrac{\pi }{6} + k\pi \,\,\left( {k \in \mathbb{Z} } \right)\)
B.\(x = - \dfrac{\pi }{6} + k\pi \,\,\left( {k \in \mathbb{Z} } \right)\)
C.\(x = - \dfrac{\pi }{6} + k2\pi \,\,\left( {k \in \mathbb{Z} } \right)\)
D.\(x = \dfrac{\pi }{6} + k2\pi \,\,\left( {k \in \mathbb{Z} } \right)\)
Loga
Hóa Học lớp 12
