Question

cos 3п/2 + ctg 5п/6
Срочно надо

Answer 1

$Cos frac{3 pi }{2} +Ctg frac{5 pi }{6}=0+Ctg( pi - frac{ pi }{6}) = - Ctg frac{ pi }{6} =- sqrt{3}$

Answer 2

$cos frac{3pi}{2} + ctg frac{5pi}{6} = 0 + ctg frac{pi}{6}$
$- ctg frac{pi }{6} = - sqrt[]{3}$