9000108801

SubArea: 
Points and vectors
Level: 
B
Project ID: 
9000108801
Accepted: 
1
Clonable: 
1
Easy: 
0
Find the angle between the vector \(\vec{u} = (1;\sqrt{2})\) and \(\vec{v} = (3;-1)\). Round to the nearest degree.
\(73^{\circ }\)
\(42^{\circ }\)
\(57^{\circ }\)
\(64^{\circ }\)