The value(s) of mu for which the straigh...

The value(s) of `mu` for which the straight lines `vecr=3hati-2hatj-4hatk+lambda_(1)(hati-hatj+mu hatk)` and `vec r=5hati-2hatj+hatk+lambda_(2)(hati+mu hatj+2hatk)` are coplanar is/are :

A

`(5+sqrt(33))/(4)`

B

`(-5+sqrt(33))/(4)`

C

`(5-sqrt(33))/(4)`

D

`(-5-sqrt(33))/(4)`

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The correct Answer is:

A, C

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