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Someone help me out pls

Someone help me out pls-example-1
User Ardenne
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1 Answer

3 votes

Answer:

EF ≈ 3.8

Explanation:

Using the Sine rule in Δ DEF


(EF)/(sin75) =
(DE)/(sin50) , that is


(EF)/(sin75) =
(3)/(sin50) ( cross- multiply )

EF × sin50° = 3 × sin75° ( divide both sides by sin50° )

EF =
(3sin75)/(sin50) ≈ 3.8

User Lesther
by
5.5k points