What are the exact points of intersection on this graph? I have it graphed but I can't remember how to get the points of intersection

What are the exact points of intersection on this graph I have it graphed but I cant remember how to get the points of intersection class=

Respuesta :

Answer:

(-2 pi, 0) ; (-2 pi, -3) ; (2 pi, 0) ; (2 pi, -3)

Step-by-step explanation:

I plugged the equations into my graphing calculator. Well wishes.