Angles of Elevation

A 6-meter building is 8 meters away. At what angle of elevation must you look to see the top of the buiding?

If you look up at an angle of 30° above the horizon you can see the top of a 200-meter cliff. How far from your position is the base of the cliff?

A skyscraper is 100 m away and its top floor can be sighted at a 60° angle above the horizon.  How high is it?

If a 20-meter tall waterfall is 30 m away, at what angle above the horizon could you sight the top of the waterfall?

A 2-meter person can be sighted at an angle of 20° above the horizon, how far away is this person standing?

A statue is 15 m away and can be sighted at an angle of 45° above the horizon.  How tall is the statue?