2022 EOY ACSI P1 Q12
2022 EOY ACSI P1 Q12
IP 2
3 marks
In the figure, \(\mathrm{OA}\) makes an angle of \(150^{\circ}\) with the positive \(x\)-axis. Given that \(\cos{60^{\circ}} = 0.5\) and \(\mathrm{OA} = \sqrt{12}\), find the coordinates of \(\mathrm{A}\). [3]
Solution:
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Answer:\(A(-3,\sqrt3)\).
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