Question

In ΔDEF, the measure of ∠F=90°, the measure of ∠E=53°, and DE = 57 feet. Find the length of FD to the nearest tenth of a foot.

Answer 1

DF = 45.5 feet

Explanation:

∠D = 37°

cos 37 = DF/57

DF = 57·cos 37

DF = 45.5'