In the figure, $\mathrm{OA}$ makes an angle of $150^{\circ}$ with the positive $x$-axis. Given

Question

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]

Accepted Answer

$ A \ \left(-3, \sqrt{3} \right)$

2022 EOY ACSI P1 Q12

2022 EOY ACSI P1 Q12