Question

Let ->V1= -6.1 ihat + 8.0 jhat and ->V2 = -4.8 jhat + 4.2 ihat.

Determine the direction of ->V1 counterclockwise from the +x direction

Determine the direction of ->V2
counterclockwise from the +x direction

Answer 1

x is - and y is + so quadant 2
tan theta = y/x = 8/6.1
theta = 52.7 degrees up from -x axis
so angle = 180-52.7 = 127.3
Do the second one the same way

Answer 2

I get 131.18 degrees and its wrong. I don't know what I am doing wrong.