Originally Posted by
gbruyn
You are on the XYZ VOR 090° radial at 20 DME. You are instructed to proceed direct to the XYZ VOR 180° radial at 70 DME. The direct, no wind heading is:
a) 185°
b) 190°
c) 195°
d) 200°
This is a good question. I found two ways to solve it but not sure what's the best or most correct. The first is that this is a right triangle trig.
Tan X = 2/7
2/7 = .2857
Tan 16 = .2867
Thus, it's 196
The other option is to use the 60 to 1 rule. So if your at 60 DME on the 180 and want to go to the 20 DME on the 090 that is the same as a 20 degree turn. So your heading is now 360 + 20 = heading 020. We want to go the other directions so heading is now 200. So to be more accurate we have to go to 70 DME. If 60 to 1 then it's 70 to .86. So 20 X .86 =16.8. So 360 + 16.8 = heading 016.8. That's if we want to go from the 70 DME to the 20 DME going north we want to go south so the heading is 196.8.
So the answer I come up with is 196.8 but it would appear the only choices are 195 and 200. Guess I'll have to go with 195. Just sucks when the answers to choose from isn't even a correct choice.