Posted by Alex on Sunday, April 7, 2013 at 12:10pm.
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

11th grade math  Steve, Sunday, April 7, 2013 at 1:07pm
If you have trig as a resource, then the altitude h from F to DE is
h = 10 sin 50° = 7.66
Then, the area a = 14*h