Posted by **physics** on Tuesday, September 15, 2009 at 4:12am.

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

- physics -
**Damon**, Tuesday, September 15, 2009 at 4:21am
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

- physics need to check -
**physics**, Tuesday, September 15, 2009 at 4:33am
I get 131.18 degrees and its wrong. I don't know what I am doing wrong.

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