Question:
If \(\vec{a}\) and \(\vec{b}\) are two vectors such that \(\vec{a}.\vec{b}>0\) and \(|\vec{a}.\vec{b}|=|\vec{a}\times\vec{b}|\), then the angle between \(\vec{a}\) and \(\vec{b}\) is:
- A. \(\frac{\pi}{4}\)
- B. \(\frac{\pi}{3}\)
- C. \(\frac{2\pi}{3}\)
- D. \(\frac{3\pi}{4}\)