Dr. Black is standing 20 feet from a streetlamp. The lamp is making his shadow 5 feet long. He estimates that the angle of elevation from the tip of his shadow to the top of the streetlamp is 30 degrees. To the nearest foot, the streetlamp is about _____.

Answer 1

Did you make your sketch?

I will assume you want the height of the streetlamp?

then tan30° = height/25
continue ....

Answer 2

14

Answer 3

14.43