Diagram here: http://img172.imageshack.us/img172/1344/trig.jpg

What is the length from B to C?

What is the area of triangle?

- Jul 5th 2009, 09:24 PMolivia59What is the length from B to C? What is the area of triangle?
Diagram here: http://img172.imageshack.us/img172/1344/trig.jpg

What is the length from B to C?

What is the area of triangle? - Jul 5th 2009, 09:29 PMyeongil
Use the Law of Cosines to find the length of BC:

So the length of BC is about 23.13 m.

Then use Heron's formula to find the area. If you have a triangle with side lengths a, b & c, the formula is

where

In our case:

and

So the area of the triangle is about 127.28 sq. m.

01 - Jul 5th 2009, 09:31 PMolivia59wht is the area
thanks. what is the area? i dont know which side is the base, i know its 1/2 x base x height

- Jul 5th 2009, 10:57 PMarze
there are more ways to find the area of a triangle than 1/2*base*height. there is, for example, 1/2*B*C*sinA and the like

in the answer given by yeongil, Heron's formula was used Heron's formula - Wikipedia, the free encyclopedia

hope this helps