How to find the angle between r and the x axis?

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  • #2
Tom Mattson
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You miscalculated r.
 
  • #3
fzero
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Recheck how you computed the expression for r. The expression with the square root looks ok, but I find that it evaluates to 4.6, not 8.5.
 
  • #4
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Recheck how you computed the expression for r. The expression with the square root looks ok, but I find that it evaluates to 4.6, not 8.5.

Ok so i got 86.64 is that correct?
 
  • #5
fzero
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Looks right.
 

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