일반물리학 1 — Vectors: Problem 39

39 Vector \(\vec{A}\) has a magnitude of 6.00 units, vector \(\vec{B}\) has a magnitude of 7.00 units, and \(\vec{A} \cdot \vec{B}\) has a value of 14.0. What is the angle between the directions of \(\vec{A}\) and \(\vec{B}\)?