1.

A unit vector parallel to the intersection of the planes vecr.(hati - hatj + hatk) =5 and vecr.( 2 hati + hatj - 3 hatk) =4 is

Answer»

`(2 hati + 5 HATJ - 3 HATK)/(sqrt38)`
`(2 hati - 5 hatj + 3 hatk)/(sqrt38) `
`(-2 hati - 5 hatj - 3 hatk)/(sqrt38)`
`(- 2 hati + 5 hatj - 3 hatk)/(sqrt38)`

ANSWER :C


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