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If veca=hati+lamdahatj+2hatk,vecb=muhati...

If `veca=hati+lamdahatj+2hatk,vecb=muhati+hatj-hatk` are orthogonal and `|veca|=|vecb|` , then `(lamda,mu)`=

A

`(1/4, 9/4)`

B

`(-1/4, 9/4)`

C

`(7/4, 1/4)`

D

`(1/4, 7/4)`

Text Solution

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The correct Answer is:
D
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