Here's the easy way (as per RAT 5). Remember three numbers. Point 5, 7 & 9. With a wind 30 degrees off the runway, the crosswind component is 0.5. At 45 degrees it is 0.7. You can already guess what it is for 60 degrees. The same applies for headwind/tailwind components. These values are also good enough for cross country planning.
PM
Last edited by Piltdown Man; 24th Jul 2017 at 17:41.