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If the vectors veca=hati-hatj+2hatk, vec...

If the vectors `veca=hati-hatj+2hatk, vecb=2hati+4hatj+hatk and vecc= lambda hati+hatj+muhatk`

A

(2,-3)

B

(-2,3)

C

(3,-2)

D

(-3,2)

Text Solution

Verified by Experts

The correct Answer is:
D
`veca. vecb=0, vecb, vecc.= and vecc. veca.=0 rArr 2lambda+4+mu=0 and lambda-1+2mu=0`
Solving we get `lambda-=-3l mu=2`
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