1.

The vector veca = alpha hati + 2 hatj + beta hatk lies in the plance of the vectors vecb = hati + hatj and vecc= ahtj + hatk and bisects the angle between vecbg and vecc. Then which one of the following gives possible values of alpha and beta ?

Answer»

`ALPHA =1 , BETA =1`
`alpha=2 , beta=2`
`alpha =1, beta =2`
`alpha=2, beta=1.`

ANSWER :A


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