Asked by TAYLOR

find the angle between vectors U= <2,3> and V= <1, -5>
Answered by Damon
cos T = U dot V / ( |U|* |V| )
= (2-15) / (sqrt 13 + sqrt 26)
= -13 / (sqrt 13 + sqrt 2 sqrt 13)

= -13/ [sqrt 13 (1 + sqrt 2) ]
Answered by TAYLOR
would that be 88 degrees, 45 degrees, 135 degrees, or 92 degrees?
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