Question

!!!!!пж вычислите 9 класс

Answer 1

$2 \cot( \frac{5\pi}{4} ) + \sqrt{3} \tan( - \frac{5\pi}{3} ) =$
$2 \times 1 + \sqrt{3} \sqrt{3} =$
$2 + 3 = 5$

Answer 2

$2ctg\frac{5\pi}{4}+\sqrt3tg(-\frac{5\pi}{3})=2ctg(\pi +\frac{\pi}{4})-\sqrt3tg(\pi +\frac{2\pi }{3})=\\\\=2ctg\frac{\pi}{4}-\sqrt3tg\frac{2\pi }{3}=2\cdot 1-\sqrt3\cdot tg(\frac{\pi }{2}+ \frac{\pi}{6})=2+\sqrt3\cdot ctg \frac{\pi }{6}=\\\\=2+\sqrt3\cdot \sqrt3=2+3=5$