Waec Model Questions Vol1 2019 Mathematics Question 18
Practice objective / multiple choice question 18 from the 2019 Waec Model Questions Vol1 Mathematics examination.
In a plane, vectors \(\mathbf{a}\) and \(\mathbf{b}\) have magnitudes |a| = 5 and |b| = 7 respectively. If the vector (a + 2b) is perpendicular to (3a - b), find the angle between a and b (in degrees, correct to one decimal place).
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About This Question
This is Waec Model Questions Vol1 2019 Mathematics Question 18. It is one of the objective questions from the 2019 Waec Model Questions Vol1 Mathematics examination.
Difficulty level: Hard .
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