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frosja888 [35]
3 years ago
15

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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