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If the planes vecr.(hati + hatj + hatk) ...

If the planes `vecr.(hati + hatj + hatk) = q _(1) , hatr. (hati + 2 a hatj + hatk) = q _(2) and vecr.(ahati + a ^(2) hatj + hatk) = q _(3)` intersect in a line, then the value of a is

A

1

B

`1//2`

C

2

D

9

Text Solution

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The correct Answer is:
A, B
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