Question

Cine ma ajuta va rog? 2 x cos 30 - ctg 30
Vreau rezolvat.

Answer 1

Răspuns:

0

Explicație pas cu pas:

$\displaystyle cos \: 30 = \frac{ \sqrt{3} }{2} \\ctg \: 30 = \sqrt{3} \\\\2\times cos30-ctg30=\\\not2 \times \frac{ \sqrt{3} }{\not2} - \sqrt{3 } = \\ \sqrt{3} -\sqrt{3} =0$