Waec Model Questions Vol1 2020 Mathematics Question 50

Practice objective / multiple choice question 50 from the 2020 Waec Model Questions Vol1 Mathematics examination.

Waec Model Questions Vol1 2020 Mathematics Objective / Multiple Choice Hard Difficulty
Question 50 WAEC_MODEL_QUESTIONS_VOL1 • 2020 • MATHEMATICS • objective

In the plane, let \(A(0,0)\), \(B(3,4)\) and \(C(k, y)\) be three points such that \(\vec{AB}\) is perpendicular to \(\vec{AC}\) and the length of \(BC\) is 10 units. Find all possible values of \(k\).

Answer Options

A. \(k = 8\)\sqrt{3} or k = -8\sqrt{3}
B. \(k = 5\)\sqrt{3} or k = -5\sqrt{3}
Correct Answer C. \(k = 4\)\sqrt{3} or k = -4\sqrt{3}
D. \(k = 4\)\sqrt{2} or k = -4\sqrt{2}
Correct Answer
C
Correct Option:
\(k = 4\)\sqrt{3} or k = -4\sqrt{3}

About This Question

This is Waec Model Questions Vol1 2020 Mathematics Question 50. It is one of the objective questions from the 2020 Waec Model Questions Vol1 Mathematics examination.

Difficulty level: Hard .

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