mathematics

a traveler moves from a town p on a bearing of 055degree to another town q 200 km away, he then moves from q on a bearing of 155degree to another town r 400km from q.find the distance between p and r,bearing of p from r correct to 3significant figures (mathematics:topic is bearing and distance)

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  1. use the law of cosines to find PR
    PR^2 = 200^2 + 400^2 - 2*200*400 cos80°
    PR = 415 km
    bearing = 330.17°

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    oobleck
  2. A travelled move from a town p on a bearing of 55toQ200kmaway then proves from Q in a bearing of 155 to a town R400km find(a)distance b/w p and R (b)bearing ofP from Q

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