Question

Let \(\overrightarrow a\) and \(\overrightarrow b\) be two unit vectors. If the vectors \(\overrightarrow c=5\overrightarrow a-4\overrightarrow b\) and \(\overrightarrow d = \overrightarrow a+2\overrightarrow b\) perpendicular to each other, then the angle between \(\overrightarrow a\) and \(\overrightarrow b\) is:

• A. 0
• B. \(\frac{π}{3}\)
• C. \(\frac{π}{4}\)
• D. \(\frac{π}{6}\)

Answer 1

The Correct Option is B

The correct option is (B):

\(\frac{π}{3}\)