Someone help me out pls

Mathematics

1 answer:

Leni [432]3 years ago

8 0

Answer:

EF ≈ 3.8

Step-by-step explanation:

Using the Sine rule in Δ DEF

$\frac{EF}{sin75}$ = $\frac{DE}{sin50}$ , that is

$\frac{EF}{sin75}$ = $\frac{3}{sin50}$ ( cross- multiply )

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

EF = $\frac{3sin75}{sin50}$ ≈ 3.8

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