Posted by **Anonymous** on Wednesday, January 26, 2011 at 9:49pm.

Dr. Black is standing 15 feet away from the street lamp. The lamp is making his shadow 8 feet long. The angle of elevation from the tip of the shadow to the tip of the streetlamp is 50 degrees. How tall is the streetlamp?

- Pre Calc -
**helper**, Wednesday, January 26, 2011 at 10:13pm
If I am understanding this picture,

a right triangle is formed with angle A = 50 degrees and side b = 23 (15 + 8).

You need the length of a, which is the streetlamp.

tan A = opp/adj = a/b = a/23

tan 50 = a/23

1.19 = a/23

Solve for a, for your answer

- Pre Calc -
**Anonymous**, Thursday, February 17, 2011 at 9:56pm
27.37

## Answer this Question

## Related Questions

- Math Urgent help please - A lamppost casts a shadow of a man who is standing 15 ...
- math - A LAMP POST IS 10 FEET TALL AND CAST A SHADOW. THE DISTANCE FROM THE TOP ...
- math - A man 6 feet tall walks at a rate of 5 feet/sec toward a street lamp that...
- Trig/Precalc - a lamp post that is 8 feet high casts a shadow 5 feet long. how ...
- math - The top of a billboard is 30 feet above ground. The billboard casts a 235...
- Calculus - A street light is hung 18 ft. above street level. A 6-foot tall man ...
- calculus - A person 150cm tall is walking away from a lamp post at the rate of ...
- Algebra II - A person who is 6 feet tall walks away from a 50-foot silo toward ...
- College Algebra - A person who is 6 feet tall walks away from a 50-foot tower ...
- math - A man is 6ft tall is standing 10 feet from the base of a lamp post. The ...