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If the planes hatr.2hati+gammahatj-3hatk...

If the planes `hatr.2hati+gammahatj-3hatk=0` and `hatr.gamma hati+3hatj+hatk`=5 are perpendicular then `gamma` is equal to

A

2

B

`-2`

C

3/5

D

`-3`

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IPUCET PREVIOUS YEAR PAPERS-GGSIPU MATHEMATICS 2010-MCQs
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