ID: Class: 12 Subject: Math Topic: Vector Algebra Type: Short (SA) Year: 2025

Question:

If \(\vec{a}+\vec{b}+\vec{c}=\vec{0}\) such that \(|\vec{a}|=3\), \(|\vec{b}|=5\), \(|\vec{c}|=7\), then find the angle between \(\vec{a}\) and \(\vec{b}\).