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Let overset(rightarrow)a=alphahati+2hatj...

Let `overset(rightarrow)a=alphahati+2hatj+betahatk` `overset(rightarrow)a` lies in a plane of `overset(rightarrow)b & overset(rightarrow)c`
`overset(rightarrow)b=hati+hatj` & `overset(rightarrow)(c)=hati-hatj+4hatk` and `overset(rightarrow)a` bisectors angle between `overset(rightarrow)b & overset(rightarrow)c` then

A

`overset(rightarrow)a.overset(rightarrow)(k)+2=0`

B

`overset(rightarrow)a.overset(rightarrow)(k)+4=0`

C

`overset(rightarrow)a.overset(rightarrow)(k)-2=0`

D

`overset(rightarrow)a.overset(rightarrow)(k)+5=0`

Text Solution

Verified by Experts

The correct Answer is:
A
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