Question 192911: An airplane flies on a course of 130* at a speed of 1100 km/h. How far east of it starting point is it after 3 hours?
Answer by RAY100(1637)   (Show Source):
You can put this solution on YOUR website! 130 is heading from north
d=vt=1100 km/hr * 3 hrs =3300km ,, distance along hypotenuse
sketching a triangle with east as one leg, hypotenuse along 130 heading
supplement of 130 is 50 deg, which is also top vertex angle, opposite horizontal line that is east.
in short, sin 50 deg = x/3300, or x=3300*sin50 = 2527.9
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