Question

!!!!!пж вычислите 9 класс

Answer 1

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

Answer 2

$2ctgfrac{5pi}{4}+sqrt3tg(-frac{5pi}{3})=2ctg(pi +frac{pi}{4})-sqrt3tg(pi +frac{2pi }{3})=\\=2ctgfrac{pi}{4}-sqrt3tgfrac{2pi }{3}=2cdot 1-sqrt3cdot tg(frac{pi }{2}+ frac{pi}{6})=2+sqrt3cdot ctg frac{pi }{6}=\\=2+sqrt3cdot sqrt3=2+3=5$