9000101807

SubArea: 
Points and vectors
Level: 
B
Project ID: 
9000101807
Accepted: 
1
Clonable: 
1
Easy: 
0
Given points \(A = [1;1]\), \(B = [5;2]\) and \(C = [8;7]\), find the angle \(\measuredangle ABC\).
\(135^{\circ }\)
\(26.5^{\circ }\)
\(30^{\circ }\)
\(60^{\circ }\)