Question

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 joing 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.​

Answer 1

so the height of the tower is 10 root 3 m and the width is 10m