Question

Radical din 3*cos30+sin 30+1 pe 2 *cos90=2

Answer 1

Explicație pas cu pas:

cos 30°= ✓3/2

sin 30° = 1/2

cos 90°=1

$\sqrt{3} \times \frac{ \sqrt{3} }{3} + \frac{1}{2} + \frac{1}{2} \times 1 =2 \\ \\ \frac{3}{3} + \frac{2}{2} = 2 \\ 1 + 1 = 2 \\ 2 = 2 \: Adevarat$