ID: Class: 12 Subject: Math Topic: Vector Algebra Type: Mcq Year: 2024

Question:

Let \(\theta\) be the angle between two unit vectors \(\hat{a}\) and \(\hat{b}\) such that \(\sin\theta=\frac{3}{5}\). Then, \(\hat{a} \cdot \hat{b}\) is equal to:
  • A. \(\pm\frac{3}{5}\)
  • B. \(\pm\frac{3}{4}\)
  • C. \(\pm\frac{4}{5}\)
  • D. \(\pm\frac{4}{3}\)