anonymous
  • anonymous
if v1=(2,5) and v2=(4,-3) then the angle between the two vectors is_____. round the answer to two deciaml places
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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Hero
  • Hero
|dw:1328233416114:dw|
Hero
  • Hero
|dw:1328233602643:dw|
amistre64
  • amistre64
\[cos(t)=\frac{v1.v2}{|v1||v2|}\]

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amistre64
  • amistre64
even tho the tangent thing would work as well :)
Hero
  • Hero
105.07
amistre64
  • amistre64
cos(t) = -7/5sqrt(29) t = arccos(-7/5sqrt(29))
amistre64
  • amistre64
105 degrees or so is good
Hero
  • Hero
Yeah, I'll just stick with tangent. I suppose your way is faster, but I don't know.....
amistre64
  • amistre64
its easier when the angles arent split on the x axis :)
amistre64
  • amistre64
otherwise that tangent is just as suitable
Hero
  • Hero
I suppose.
Hero
  • Hero
I doubt it though. I'd still figure out a way to use tangent discreetly

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