Question

In a 30-60-90 triangle, the hypotenuse is 20 feet long. Find the length of the length of the long leg and the short leg.

Answer 1

long leg = 17.321 ft
short = 10 ft

Answer 2

20cos(30) gives one leg, 20cos(60) gives the other

Answer 3

In a 30°-60°-90° triangle the sides are in the ratio 1 : 2 : root3
where shortest side 1 is opposite the 30 deg angle
largest side 2 is opposite to the 90 deg angle (it is hypotenuse)
side 3 is opposite to the 60 deg angle

so

10 : 20 : 17.321