1.

Ifa = 2 hati + 3 hatj+ hatk, b = hati - hatj + 2 hatk "and" c= 2hati + hatj + hatk are three vecotrs , then|(a xx b) xx c | =

Answer»

A.`|a XX (B xx C) |`
B.`(sqrt39)/(sqrt11) | a xx (b xx c) |`
C.`SQRT(11/39) | a xx ( b xx c) | `
D.`sqrt11 | a xx (b xx c ) |`

ANSWER :C


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