\(\vec{a}\) and \(\vec{b}\) are unit vectors such that \(2\vec{a}-4\vec{b}\) and \(10\vec{a}+8\vec{b}\) perpendicular to each other. Angle between the vectors \(\vec{a}\) and \(\vec{b}\) is:

\(\vec{a}\) and \(\vec{b}\) are unit vectors such that \(2\vec{a}-4

1.	\(\vec{a}\) and \(\vec{b}\) are unit vectors such that \(2\vec{a}-4\vec{b}\) and \(10\vec{a}+8\vec{b}\) perpendicular to each other. Angle between the vectors \(\vec{a}\) and \(\vec{b}\) is:
A.	90°
B.	120°
C.	110°
D.	100°
Answer» C. 110°