12. Due to a heavy storm, a part of a banyan tree broke without separating from the main. The top of the tree touched the ground from the base making an angle of with the ground. Calculate the height of the tree before it was broken.

According to the question,

Let us assume that PR was original tree and due to storm it was broken into two parts, the broken part P^’Q is making with ground.

In ΔP^’QR,

As we know,

QR = 15

Then,

Therefore, height of tree

   

   

   

Hence, the height of whole tree is

   

.