Răspunsuri

2014-04-28T16:27:46+03:00
M(ACB)=30 grade
ceea ce inseamna ca AB=BC/2
AC²+AB²=BC²⇒AC²+ \frac{BC {2} }{4} = BC²
BC²- \frac{BC {2} }{4} =1
3BC²/4=1⇒3BC²=4⇒BC²=3/4⇒BC= \frac{\sqrt{3} }{2}cm