Question

Demonstrati ca radical din 3 cos 30° + radical din 2 sin 45° = 5/2

Answer 1

$\sqrt 3\cdot \cos 30\textdegree +\sqrt2 \cdot \sin 45\textdegree =\sqrt 3\cdot \dfrac{\sqrt 3}{2}+ \sqrt 2\cdot\dfrac{\sqrt 2}{2}= \dfrac{3}{2}+\dfrac{2}{2}=\dfrac{3+2}{2}=\dfrac{5}{2}$

Answer 2

Asa vine exercitiul sper sa intelegi scrisul