anonymous
  • anonymous
How to Find out; the Resultant Displacement & the Direction of the resultant (with respect to +ve x-axix) If a Car travels 200 km due EAST and then 150 km 60 (degrees) North Of East.
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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TuringTest
  • TuringTest
Draw a vector diagram:|dw:1329594315669:dw|it looks Law of cosines will take care of this in a flash\[\large d^2=a^2+b^2-2ab\cos D \]where D is the angle that subtends side d (which is the displacement, and a and b are the other sides of the triangle
TuringTest
  • TuringTest
knowing that you can then find the angle of direction (beta) by using the law of cosines again|dw:1329594764737:dw|
TuringTest
  • TuringTest
I should just call the direction angle B, sorry*

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TuringTest
  • TuringTest
|dw:1329594887617:dw|\[b^2=d^2+a^2-2da\cos B\]solve for B to get the angle
anonymous
  • anonymous
so angle D must be 120....Right.. ?
anonymous
  • anonymous
d= 304.138 & 25.28 degrees Thanks!
TuringTest
  • TuringTest
nice job :D welcome!

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