18. Exercise problems XI

A TV tower stands vertically on a bank of a canal. From a point on the other bank directly opposite the tower, the angle of elevation of the top of the tower is $60^°$. From another point $20 m$ away from this point on the line joining this point to the foot of the tower, the angle of elevation of the top of the tower is $30^°$ (see Fig.). Find the height of the tower and the width of the canal.

 

 

Width of the canel $=$ $m$

 

Height of the canel $=$ $m$

 

Note: Enter the answer upto two decimal places.