Sunday

January 25, 2015

January 25, 2015

Posted by **Chloe Mack** on Sunday, January 30, 2011 at 7:57pm.

- Pre-Calculus-Trig -
**Henry**, Tuesday, February 1, 2011 at 11:54amUse the Law of Cosines to solve triangle ABC:

cosC = (a^2 + b^2 - c^2) / 2ab.

cos38=((440)^2+(300)^2-c^2)/2*440*300,

0.7880 = (283600 - c^2) / 264000,

Cross multiply:

-c^2 + 283600 = 208032,

-c^2 = 208032 - 283600,

-c^2 = - 75568,

c^2 = 75568,

c = 275ft. = Distance from A to B.

**Answer this Question**

**Related Questions**

Math - Two points A and B are on opposite sides of a building. A surveyor ...

Per Calculus - A surveyor is standing 50 feet from the base of a building. The ...

math - Sighting the top of a building, a surveyor measured the angle of ...

Math - A surveyor sights the top of a building with a handheld range finder. The...

Trigonometry - A hill in Colorado makes an angle of 15.0° with the horizontal ...

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

math - a ladder is leaning againt the side of a building. The ladder is 10 feet ...

Trigonometry (Math) - A ladder 42 feet long is place so that it will reach a ...

TRIG Help help help test tommarow - A TV tower stands on top of the Empire State...

Pre-Calculus - A surveyor measures the distance between buildings X and Y as ...