In the diagram below point A represents the position of a boy standing on level ground.B represents the position of a bird on the top of a building.The boy is 5m from the foot of the building and the bird is 8m above the ground
Calculate the angle of elevation of B from A​

In the diagram below point A represents the position of a boy standing on level groundB represents the position of a bird on the top of a buildingThe boy is 5m class=