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2010-03-23T19:40:38+01:00
A)
AC = 9
AC = BC√3
9 = BC√3 |:√3
9/√3 = BC
3√3 = BC

BA = 2BC
3√3 * 2 = BA
6√3 = BA

b)

BA = 2BC
BA = 3,6
3,6 = 2BC |:2
1,8 = BC

CA = BC√3
CA = 1,8√3
1 1 1