a tree casts a shadow that is 150 feet long. if the angle of elevation from the tip of the shadow to the top of the tree is 30 degrees how tall is the tree to the nearest foot

In 1933 the 21st amendment was added to the u.s. constitution, allowing for the manfacture, transportation, and sale of alacoholic beverages in the united states. why was this amendment needed?

Where is the vascular system located

What are economic benefits of building dams