Posted by TAYLOR on Thursday, May 17, 2012 at 4:53pm.
find the angle between vectors U= <2,3> and V= <1, 5>

trig  Damon, Thursday, May 17, 2012 at 6:04pm
cos T = U dot V / ( U* V )
= (215) / (sqrt 13 + sqrt 26)
= 13 / (sqrt 13 + sqrt 2 sqrt 13)
= 13/ [sqrt 13 (1 + sqrt 2) ]

trig  TAYLOR, Thursday, May 17, 2012 at 6:10pm
would that be 88 degrees, 45 degrees, 135 degrees, or 92 degrees?
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