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Two cyclicst leaves from the same location with an ange of 63 degrees between their paths.  Johal cycles at a speed of 35 km/h and Julio at a speed of 40 km/h.  How far apart are they after 3 hrs?

 Mar 20, 2021
 #1
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After  3 hrs.....Johal  has traveled  3 * 35  =  105 km

And  Julio  has traveled  3 * 40  = 120 km

 

We  can  use  the Law of Cosines  to  find  the  distance^2, d^2, between them

 

d^2 =   105^2  + 120^2   -2(105 * 120) cos (63°)

 

d^2 = 13984

 

d  = sqrt ( 13984)   ≈   118.25  km

 

 

cool cool cool

 Mar 20, 2021

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