Question

a person standing on the bank of river observed that the angle of elevation of the top of the tree standing on the opposite bank is 60 degree when he move 40 m away from the bank he find the angle of elevation to be 30 degree find the height of tree and width of the River

Answer 1

height of the tree = 20 root3

$20 \sqrt{3}$

width of the river = 20 m

Answer 2

Answer:height is 20√3m

width is 20m

Step-by-step explanation:

This should help.