Question

Find the direction angle for each vector.
(1,-1) (-4,-7)

Answer 1

tanθ = y/x
pay attention to the quadrant

Answer 2

I don't understand at all. Are you able to help step by step. I have a lot of questions and was hoping to have something step by step to go by so I can understand and answer the other ones as well. I didn't have any instruction. Thank you.