Question

What is the value of the y-coordinate of point A

Answer 1

Answer:  $-\dfrac{1}{2}$

Step-by-step explanation:

The coordinate at -30° (-30° = 330°) = $\bigg(\dfrac{\sqrt3}{2},-\dfrac{1}{2}\bigg)$

the x-value is  $\dfrac{\sqrt3}{2}$

the y-value is  $-\dfrac{1}{2}$