9000101801

SubArea: 
Points and vectors
Level: 
A
Project ID: 
9000101801
Accepted: 
1
Clonable: 
0
Easy: 
1
Among vectors \(\vec{a} = (-1;2;0)\), \(\vec{b} = (2;1;2)\), \(\vec{c} = (1;3;0)\) and \(\vec{d} = (-3;0;0)\) find a pair of vectors with equal length.
\(\vec{b}\), \(\vec{d}\)
\(\vec{a}\), \(\vec{c}\)
\(\vec{a}\), \(\vec{d}\)
\(\vec{b}\), \(\vec{c}\)