Dorsal Posted December 24, 2005 Report Share Posted December 24, 2005 I posted this into another thread that some of you may not have read, but it made me think there are probably a lot of generic shortcuts many of us use, that can be used to make kites. I hope some of you post yours. The SIN and the TAN of any angle from 1/2 degree to about 10 degrees is very close to .017 per degree. (SIN 1/2° = 0.00872, divided by 1/2 = 0.01745 per degree - - - SIN 10° = 0.17364, divided by 10 = .01736 per degree. TAN numbers are similar.) That means you can calculate the rise by multiplying .017 times the angle times the length of the item at that angle, and you'll be within 10% of the exact figure. If you need the exact numbers use a calculator with trig functions or look it up in a trig table, but for off-the-cuff rough calcs, it's pretty close. It ONLY works for angles in this range, but it works for imperial, metric, fathoms, furlongs, parsecs, or any other unit of measure you can encounter. 1 Quote Link to comment Share on other sites More sharing options...
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