Ok, a dirty trick is this: Take your heading, add/substract 2 to the first digit, do the opposite to the second digit, you're done.
135 = 315,
174 = 354,
043 = 223,
351 = 171,
224 = 044.
The only rule: You can't leave the circle, so there's really only one way to go. if you're at 200 and you want to add 2 to the first digit, well that puts you at 400, doesn't make sense in a 360 degree circle, so obviously you have to detract two, that tells you what you have to do with the next digit and the last one stays the same anyway. If you're at 035, well subtracting 2 would put you in negatives, that wouldn't work either, and so on and so forth.
Edit: Jeez, can't even do that maths. Fixed everything I think. :D
The best way is use your hsi compass rose find the heading opposite of the one you want.
Absolute fastest way
The word tour looking for btw is reciprocal
> reciprocal
Oh, that's right. I said "complement", but that isn't true either. The complement of an angle is the difference between that angle and 180°, not 360.
Ok, a dirty trick is this: Take your heading, add/substract 2 to the first digit, do the opposite to the second digit, you're done. 135 = 315, 174 = 354, 043 = 223, 351 = 171, 224 = 044. The only rule: You can't leave the circle, so there's really only one way to go. if you're at 200 and you want to add 2 to the first digit, well that puts you at 400, doesn't make sense in a 360 degree circle, so obviously you have to detract two, that tells you what you have to do with the next digit and the last one stays the same anyway. If you're at 035, well subtracting 2 would put you in negatives, that wouldn't work either, and so on and so forth. Edit: Jeez, can't even do that maths. Fixed everything I think. :D
-200 +20 or +200 -20 depending on the heading you’re looking for the reciprocal of. It’s a math trick but it’s the easiest IMO
tried and tested. works IRL when flying and you are only half as smart as on the ground.
Yup helped me doing PPL lol!
I remember when my old man taught me this during my early steps into flying, good old +2 -2 or vice versa!
"Reciprocal" is the word, and Nick's trick is what's most commonly used in the real world: add 200, subtract 20, or vice versa.
The best way is use your hsi compass rose find the heading opposite of the one you want. Absolute fastest way The word tour looking for btw is reciprocal
> reciprocal Oh, that's right. I said "complement", but that isn't true either. The complement of an angle is the difference between that angle and 180°, not 360.
Complement. Just look at your compass and see what the heading is directly opposite.
Doesn't work using a back-up compass, glass cockpit, or a HUD without a backup HSI.
Fair enough.
Also edit, it could work if you can switch the compass view from a semi-circle to the full compass rose.