If \a^{\^},\b^{\^},\c^{\^},\d^{\^}are unit vectors such that (\a^{\^}\times\b^{\^}).(\c^{\^}\times\d^{\^}) = 1 and \a^{\^}.\c^{\^} = 1/2 , then

Correct Answer is : b^,d^ are non-parallel

\a^{\^},\b^{\^},\c^{\^} are non-coplanar

\b^{\^},\c^{\^},\d^{\^} are non-coplanar

\b^{\^},\d^{\^} are non-parallel

\a^{\^},\d^{\^} are parallel and \b^{\^},\d^{\^} are parallel

HCU MCA 2017 Paper

Question : 66 of 75

Marks: +1, -0

\a↖{\^},\b↖{\^},\c↖{\^},\d↖{\^}

are unit vectors such that

(\a↖{\^}×\b↖{\^}).(\c↖{\^}×\d↖{\^}) = 1

and

\a↖{\^}.\c↖{\^} = 1/2

, then

Go to Question:

Prev Question

Next Question