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- October 1st 2007, 03:00 AMafeasfaerw23231233vectors problem #3
- October 1st 2007, 03:57 AMearboth
- October 1st 2007, 05:56 AMafeasfaerw23231233
well, but the answer in my textbooks says theta is 120 degree!!

how can i get 120 degree from this? - October 1st 2007, 06:53 AMtopsquark
- October 1st 2007, 07:33 AMafeasfaerw23231233
oh, i know it now. thanks!