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0 votes
18.7k views
in Mathematics by (35.0k points)

Let \(\vec a\) and \(\vec b\) be two non-zero vectors perpendicular to each other and \(|\vec a|=|\vec b|\). If = \(|\vec a\times \vec b|=|\vec a|,\) then the angle between the vectors \((\vec a+\vec b + (\vec a\times \vec b))\) and \(\vec a\) is equal to :

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1 Answer

+1 vote
by (34.5k points)

Correct option is (2) cos-1(\(\frac{1}{\sqrt3}\))

\(\vec a\) and \(\vec b\) are mutually perpendicular unit vectors.

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