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 = 18052.7 = 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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