Giải phương trình \( \cos 2x = \sin \left( {x + \frac{ \pi }{3}} \right) \).
A. \(\left\{ {\left. {\frac{\pi }{6} + k2\pi ,\, - \frac{\pi }{6} + k2\pi } \right|k \in Z} \right\}\).
B. \(\left\{ {\left. {\frac{\pi }{{18}} + \frac{{k2\pi }}{3},\, - \frac{\pi }{6} + \frac{{k2\pi }}{3}} \right|k \in Z} \right\}\).
C. \(\left\{ {\left. {\frac{\pi }{{18}} + \frac{{k2\pi }}{3},\, - \frac{\pi }{6} + k2\pi } \right|k \in Z} \right\}\).
D. \(\left\{ {\left. {\frac{\pi }{{18}} + \frac{{k2\pi }}{3},\, - \frac{\pi }{{18}} + \frac{{k2\pi }}{3}} \right|k \in Z} \right\}\).
A. \(\left\{ {\left. {\frac{\pi }{6} + k2\pi ,\, - \frac{\pi }{6} + k2\pi } \right|k \in Z} \right\}\).
B. \(\left\{ {\left. {\frac{\pi }{{18}} + \frac{{k2\pi }}{3},\, - \frac{\pi }{6} + \frac{{k2\pi }}{3}} \right|k \in Z} \right\}\).
C. \(\left\{ {\left. {\frac{\pi }{{18}} + \frac{{k2\pi }}{3},\, - \frac{\pi }{6} + k2\pi } \right|k \in Z} \right\}\).
D. \(\left\{ {\left. {\frac{\pi }{{18}} + \frac{{k2\pi }}{3},\, - \frac{\pi }{{18}} + \frac{{k2\pi }}{3}} \right|k \in Z} \right\}\).
Loga
Hóa Học lớp 12
