Question

I have no idea I need help!!!!

Answer 1

Hmmm. Is there a question here?

Answer 2

3[90o] + (-4) + F = 0
3i + (-4) + F = 0
F = 4 - 3i = 5N[-37o] = 5N[37o] S. of E.
=5N[53o] E. of S.