Find the area of ΔDEF if DE=9m, m∠D=56° and m∠F=47°

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter0: Preparing For Algebra
Section0.8: Area
Problem 3E
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Find the area of ΔDEF if DE=9m, m∠D=56° and m∠F=47°
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