Question

Fig. 9.53.
-. A person standing on the bank of a river observe that the angle of elevation of tree is 60.
When he moves 40 m away, the angle of elevation becomes 30º. At what distance is he
now standing away from tree?​

Answer 1

Step-by-step explanation:

in the above picture the whole sum is explained clearly with diagram and explainsion..

Thank you.