Question

The angle between the lines whose direction cosines are $(\frac{\sqrt3}{4},\frac{1}{4},\frac{\sqrt3}{2})$ and $(\frac{3}{4},\frac{1}{4},\frac{-\sqrt3}{2})$ is

• A. π
• B. $\frac{π}{2}$
• C. $\frac{π}{3}$
• D. $\frac{π}{4}$

Answer 1

Answer: (C)

$\frac{π}{3}$

Answer 2

The correct answer is (C) : $\frac{π}{3}$.