Question

In ADEF, DF = 16 and mZF = 26. Find FE to the nearest tenth
18.3

14.4
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Answer 1

18.3.................

Answer 2

FE = 14.4

Explanation:

Cos = Adj / Hypo.

So

Cos (F) = FE / DF

Cos (26) = FE / 16

FE = Cos (26) * 16

FE = 0.8988 * 16

FE = 14.4