Find the angle between the vectors \(\vec{a}=\hat{i}-\hat{j}+2\hat{k} – McqOptions

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1.	Find the angle between the vectors \(\vec{a}=\hat{i}-\hat{j}+2\hat{k} \,and \,\vec{b}=3\hat{i}+2\hat{j}+4\hat{k}\).
A.	\(cos^{-1}⁡\sqrt{\frac{58}{3}}\)
B.	\(cos^{-1}⁡\frac{\sqrt{58}}{3}\)
C.	\(cos^{-1}\frac{⁡58}{3\sqrt{3}}\)
D.	\(cos^{-1}⁡\frac{\sqrt{58}}{3\sqrt{3}}\)
Answer» E.

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