E=2sin 60°+3 cos 30°/tg30°+ctg60°
[tex] e= 2 \times \frac{ \sqrt{3} }{2} + 3 \times \frac{ \sqrt{3} }{2} \times \frac{3}{ \sqrt{3} } + \frac{ \sqrt{3} }{3} [/tex]
[tex]e = \sqrt{3} + \frac{9}{2} + \frac{ \sqrt{3} }{3} \\ e = \frac{3 \times \sqrt{3} }{3} + \frac{ \sqrt{3} }{3} + \frac{9}{2} \\ e = \frac{4 \times \sqrt{3} }{3} + \frac{9}{2 } \\ e = \frac{8 \sqrt{3} }{6} + \frac{27}{6} \\ e = \frac{8 \sqrt{3} + 27 }{6} [/tex]
Sper ca te-am ajutat! succes în continuare!
