Question 1189852
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Your process is fine; but obviously 6391km can't be right....<br>
(1) Your calculations for {{{x=60sin(45)}}} and {{{y=30+60cos(45)}}} are not correct.  {{{sin(45)}}} and {{{cos(45)}}} are the same, so the difference between your x and y should be exactly 30.<br>
(2) After finding {{{x^2+y^2}}}, you didn't take the square root, as you said you were going to.<br>