Neco Model Questions Vol1 2018 Mathematics Question 18
Practice objective / multiple choice question 18 from the 2018 Neco Model Questions Vol1 Mathematics examination.
In a plane, vectors \(\mathbf{a}\) and \(\mathbf{b}\) satisfy \(|\mathbf{a}| = 5\) and \(|\mathbf{b}| = 7\). The vector \(\mathbf{c}=2\mathbf{a}-\mathbf{b}\) is perpendicular to \(\mathbf{a}+3\mathbf{b}\). Find, to the nearest degree, the acute angle between \(\mathbf{a}\) and \(\mathbf{b}\).
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This is Neco Model Questions Vol1 2018 Mathematics Question 18. It is one of the objective questions from the 2018 Neco Model Questions Vol1 Mathematics examination.
Difficulty level: Hard .
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