Question

trigonometry chapter plzz answer me

Answer 1

tan 60 = AC / DC

sqrt(3) = 60 / DC

DC = 60 / sqrt (3) - - - - sqrt(3) = 1.732

DC = 34.642 m (horizontal dist.)

tan 30 = AB / BE

1 / sqrt(3) = AB / 34.64

AB = 34.642 / sqrt(3)

AB = approx. 20 m

height of lamppost = AC - AB

= 34.64 - 20

= 14.64 m