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Old 14th Oct 2011, 14:37
  #2055 (permalink)  
ButterFly747
 
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Given that : A is 55N 00 E/W

B is 54N 10 E

If the great circle track from A to B is 100 (T), What is the true Rhumb line Track at A

a. 096
b. 107
c. 104
d. 100

Ans is C(104). Its in N. hemisphere, where GC is concave to EQ and RL is a st line. therefore A to B RL trk will be greater than GC trk. apply CA= 1/2 dlong* into Sin Mean lat. CA= 1/2 into 10 into Sin 54*30* = 4*. Ans is 100+4=104*.

hope that helps!!
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