Okay, I have this so far
As far as what I have for polar coordinate equation, this is it:
z= 6.93(cos180+ i sin?)
My problem is that 7 cannot be converted into an angle.
What would I do for this?
For the question you've posted, .
An argand diagram easily shows that z = -1 + 7i lies in the 2nd quadrant, so radians.