Реши уравнение  \((7 - 7 \sin x)\)\((tg \, x - 1)\) \(=\) \(0\):

• \(x = \frac{\pi}{3} + \pi n\)
• \(x = \frac{\pi}{4} + 2\pi n \; ; \; \; x = \frac{\pi}{2} + 2\pi n\)
• \(x = \frac{\pi}{4} + \pi n\)
• \(x = \frac{\pi}{4} + \pi n \; ; x = \frac{\pi}{2} + 2\pi n\)