Question

СРОЧНООООО!!!!!!!!Буду благодарен​

Answer 1

$2Cos(\frac{\pi }{3}-\alpha)-\sqrt{3}Sin(\pi-\alpha)+Cos\alpha=2(Cos\frac{\pi }{3} Cos\alpha +Sin\frac{\pi }{3} Sin\alpha)-\sqrt{3}Sin\alpha+Cos\alpha=2(\frac{1}{2}*Cos\alpha+\frac{\sqrt{3}}{2}*Sin\alpha)-\sqrt{3}Sin\alpha+Cos\alpha =Cos\alpha+\sqrt{3}Sin\alpha-\sqrt{3}Sin\alpha+Cos\alpha=2Cos\alpha$