1.

Find the value of lambda so that the vectors veca and vecb are perpendicular to each other. veca = (6,2,-3), vecb = (1,-4,lambda)

Answer»

SOLUTION :If `veca` and `vecb` are perpendicular `veca.vecb = 0`
`IMPLIES (6,2,-3).(1,-4,lambda) = 0`
`implies 6-8-3lambda = 0`
`implies -2-3lambda = 0 implies lambda = -2/3


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