Question

RADICAL HELP? Link to problem - http://postimg.org/image/hasb931xt/

Answer 1

tan 30 = EF / 18
tan 30 = tan PI/6 = sin PI/6 / cos PI/6 = 1/2 / root3 / 2 = 1/ root3 = 0.57
1/ root3 * 18 = EF = 18/root3

Answer 2

then just do Pythogorus theorem with EF and DF to get the missing hypotenuse

Answer 3

So would it be EF 18 SQRT 3
DF 36 SQRT 3

Answer 4

i dont have a calculator right now but ED must be
root(18^2 + (18/root3)^2)