Posted by **Alex** on Sunday, April 7, 2013 at 12:09pm.

in triangle DEF,<D=50 degree, DE=14 meters, and DF=10 meters. find the area of triangle DEFto the nearest tenth of a square meters

- Math -
**Reiny**, Sunday, April 7, 2013 at 12:39pm
If you have a triangle with sides a and b and Ø is the angle between them, then the area is

(1/2)ab sinØ

you have that condition, so

Area = (1/2)(14)(10)sin50° = appr 53.623

or to the nearest tenth ----> 53.6 m^2

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