Posted by Anonymous on Wednesday, April 16, 2008 at 3:01am.
What should be the angle between two vectors of magnitudes 3.20 and 5.70 units, so that their resultant has a magnitude of 6.10 units?
cos=a^2+b^2c^2/2ab
cos10.24+32.4937.21/(2*3.20*5.70)
= 99 degrees

physics repost  Damon, Wednesday, April 16, 2008 at 5:55am
yes, 180  81.3 = 98.7
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