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If (veca xx vecb) xx (vec c xx vecd)=h ...

If `(veca xx vecb) xx (vec c xx vecd)=h veca+k vecb=r vec c+s vecd`, where `veca, vecb` are non-collinear and `vec c, vec d` are also non-collinear then :

A

`pi^(2)`

B

`(5pi^(2))/(4)`

C

`(35pi^(2))/(4)`

D

`(37pi^(2))/(4)`

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The correct Answer is:
B, D
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VK JAISWAL ENGLISH-VECTOR & 3DIMENSIONAL GEOMETRY-Exercise-2 : One or More than One Answer is/are Correct
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