Question

CALCULUS 3: What are the possible angles between 2 unit vectors if e x f is 1/2?

Answer 1

pi/6 and 5pi/6?

Answer 2

\[e\times f=||e||~||f||\sin\theta\]
Since \(e\) and \(f\) are unit vectors,
\[\frac{1}{2}=\sin\theta\]
So yes, \(\dfrac{\pi}{6}\) and \(\dfrac{5\pi}{6}\) work.