anonymous
  • anonymous
find |vector d + vector e| given that |vector d|=3 and |vector e| = 5 where the angle between these two vector is 50 degrees.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
is it 18.4
anonymous
  • anonymous
the answer is 7.30 :( but i dont knw how to get it
anonymous
  • anonymous
nw mine is cmng 13.9

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anonymous
  • anonymous
what did you do ?
anonymous
  • anonymous
i did |d+e|^2=|d|^2+|e|^2 +2|d||e|cos |d+e|^2=25+9+30*50pi/180 |d+e|^2=34+5.23 =39.23 |d+e|^2=39.23 |d+e|=6.2
anonymous
  • anonymous
i got it :) ! you just caclulated the cos value wronge :) ! but thanks alot i got the idea from your solution :) !

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