Saturday

August 30, 2014

August 30, 2014

Posted by **tom** on Tuesday, December 6, 2011 at 9:24pm.

- MATH -
**Anonymous**, Wednesday, December 7, 2011 at 6:33amAssume the observer started out x feet from the building

tan 20 = h/x

tan 40 = h/(x-75)

.3639 = h/x

.8390 = h/(x-75)

h = .3639x

so

.8390 = .3639x/(x-75)

x = 132.45

h = 48.20

**Related Questions**

Trig - a person who eyes are 5 feet above the ground observes the top of a ...

mathemathics - an observer and a tree are standing against a slope. the observer...

Physics - a television antenna is on the roof of the building. from a pt. on the...

physics - a television antenna is on the roof of the building. from a pt. on the...

math - a man standing on ground level is 1000 feet away from the base of a 350 ...

Physics - a television antenna is on the roof of the building. from a pt. on the...

Pre-Calculus - 1.The angle of elevation to top of a building from a point on the...

Maths - An aircraft which is maintaining a constant altitude of 1000 metre is ...

Math - Montreal’s Marathon building is 195m tall. From a point level with, and ...

math - angle of elevation of the top of a mountain to a man is 45degree.if we ...