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3. Total marks for this question: 3 marks Determine the value of s if (5 -45) and ( 4 5) are perpendicular. 3 marks 4.

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3. Total marks for this question: 3 marks Determine the value of s if (5 -45) and ( 4 5) are perpendicular. 3 marks 4. Total marks for this question: 4 marks Find the measure of angle BAC for A(3, 0), B(1, 5) and C(-1, -4). 4 marks 5. Total marks for this question: 3 marks If p ( 2 ), 9 ( 3 ) and r () find a) p . q b ) q . (p-r) 3 marks

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