Guys/Girls,
The other way to do it is to work out the crosswind component by using the wind speed multiplied by the sine of wind angle off of the A/c heading. The sine of the wind angle can be found by taking the angle, dropping the zero, dividing by 10 and adding 0.2.
E.g. W/V 120/12, A/c heading 150.
=> W/V is 30 off A/c heading:
X-wind component = 12 x sin(30)
= 12 x (30/10 + 0.2)
= 12 x 0.5
X-wind component = 6 knots
I hope that makes sense.
Cheers