Question

When three vectors, A, B, and C are placed head to tail, the vector sum A + B + C = 0. If the vectors all have the same magnitude, the angle between the directions of any two adjacent vectors is: Option 1: 0 degrees Option 2: 60 degrees Option 3: 90 degrees Option 4: 120 degrees

Answer 1

60°

Step-by-step explanation:

• |A| = |B| = |C|

• 
  `\vec{A}+\vec{B}+\vec{C}=0`
• all vectors are placed head to tail

the only possible option is the 3 vectors form a equilateral triangle → the angle between 2 adjacent vectors = 60°