Ellie wants to work out the height of a building which has a fence all around it
From P she sees that the angle of elevation of the top is 28 degrees
From Q 20m closer the angle of elevation is 40 degrees
Work out the height of the building

Ellie wants to work out the height of a building which has a fence all around it From P she sees that the angle of elevation of the top is 28 degrees From Q 20m class=