Question

Rezultatul calcului: (tg60° + sin60° - ctg30°)^-1

Answer 1

Nu ştiu am avut si eu aceiasi problema!!!

Answer 2

tg60=√3
sin60=√3/2
ctg30=tg60=√3

$( \sqrt{3} + \frac{ \sqrt{3} }{2} + \sqrt{3} ) ^{-1} = \frac{1}{( \sqrt{3} + \frac{ \sqrt{3} }{2}+ \sqrt{3} }$
$\frac{1}{ \frac{2 \sqrt{3} + \sqrt{3}+2 \sqrt{3} }{2} } = \frac{2}{5 \sqrt{3} } = \frac{2 \sqrt{3} }{15}$