Waec Model Questions Vol1 2023 Mathematics Question 4
Practice objective / multiple choice question 4 from the 2023 Waec Model Questions Vol1 Mathematics examination.
Let \(\mathbf{a} = \langle2,-1,3\rangle\) and \(\mathbf{b} = \langle k,4,-2\rangle\). Define \(\mathbf{c} = \mathbf{a}\times\mathbf{b}\). If \(\mathbf{c}\) is perpendicular to the vector \(\mathbf{d} = \langle1,2, k\rangle\), find all possible values of \(k\).
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This is Waec Model Questions Vol1 2023 Mathematics Question 4. It is one of the objective questions from the 2023 Waec Model Questions Vol1 Mathematics examination.
Difficulty level: Hard .
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