Question

Окей, дам много балов) только помогите))​

Answer 1

$2Sin\frac{5\pi }{6} -4Cos\frac{2\pi }{3}+6Sin\frac{3\pi }{4}-Ctg\frac{2\pi }{3} +tg\frac{5\pi }{6}=2Sin(\pi-\frac{\pi }{6})-4Cos(\pi-\frac{\pi }{3})+6Sin(\pi-\frac{\pi }{4})-Ctg(\pi-\frac{\pi }{3})+tg(\pi-\frac{\pi }{6})=2Sin\frac{\pi }{6}+4Cos\frac{\pi }{3}+6Sin\frac{\pi }{4}+Ctg\frac{\pi }{3} -tg\frac{\pi }{6}=2*\frac{1}{2}+4*\frac{1}{2}+6*\frac{\sqrt{2}}{2}+\frac{\sqrt{3}}{3}-\frac{\sqrt{3}}{3}=1+2+3\sqrt{2}=3+3\sqrt{2}=3(1+\sqrt{2})$