Question

A tree stands vertically on the bank of river from a point on the other bank directly opposite to the tree the angle of elevation of the top of the tree is 60 from a point 20m behind this point on the same bank the angle of elevation of the top of the tree is 30find the height of the tree

Answer 1

Hope this helps

It is best way and easy.

Answer 2

Answer:

Step-by-step explanation:

let the height of tree is h and point is x meter away from tree

then

tan 60°=h/x

⇒√3=h/x

⇒h=x√3

from another point which is 20m behind this point

tan 30°=h/(x+20)

⇒1/√3=h/(x+20)

⇒h√3=x+20