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Question
Choose the correct alternative:
If `vec"a"` and `vec"b"` are parallel vectors, then `[vec"a", vec"c", vec"b"]` is equal to
Options
2
– 1
1
0
Solution
0
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Choose the correct alternative:
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Let `veca = αhati + 3hatj - hatk, vecb = 3hati - βhatj + 4hatk` and `vecc = hati + 2hatj - 2hatk` where α, β ∈ R, be three vectors. If the projection of a `veca` on `vecc` is `10/3` and `vecb xx vecc = -6hati + 10hatj + 7hatk`, then the value of α + β is equal to ______.
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