Question

A boy standing on a horizontal plane finds a kite flying at a distance of 150 m from him at an angle of elevation of 30 degree a girl standing on the roof of 30 M high building find the angle of elevation of the same kind to be 45° both the girl and boy are on the opposite side of the kite find the distance of the kite from the girl

Answer 1

hello mate!!

sin 30 equals to 20 + H 100
1/2 equals to 20 + H/100
by cross multiplication we get..
40 + 2h equals to 100
now 20 + H equal 50
h Equal to 30


sin 45 equals to h upon x
1 upon root 2 equals to h upon x
X equals to root 2 h
X equals to root 2 multiply 30
X equals to 30 root 2

Answer = 30 root 2.

Hope it helps you !