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Find the value of lambda so that the vec...

Find the value of `lambda` so that the vectors `veca` and `vecb` are perpendicular to each other. `veca` = `2hati-hatj-hatk`, `vecb` = `lambdahati+hatj+5hatk`

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If `veca` and `vecb` are perpendicular `veca.vecb = 0`
`implies (2hati-hatj-hatk).(lambdahati+hatj+5hatk) = 0`
`2lambda-1-5 = 0`
`implies 2lambda = 6 implies = lambda = 3.
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MBD PUBLICATION-VECTORS-QUESTION BANK
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