anonymous
  • anonymous
will give medal for right answer, this is all the information i was given and i am running out of time!!!!!!! For the vector W = 12, –20, determine |W| and the angle between W and the x-axis.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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caozeyuan
  • caozeyuan
length of (x,y) is sqrt(x^2+y^2)
caozeyuan
  • caozeyuan
angel is arctan(y/x)
anonymous
  • anonymous
so the angle between w and the x axis is arctan(y/x)?

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caozeyuan
  • caozeyuan
yes, but if any of x and y is negative, you need be careful to check the output of your calculator by graph the vector on the coordinate plane
anonymous
  • anonymous
oh thank you, I have been trying for days to figure this out

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