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Seans · Answer 1 · 2021-04-06T22:29:44+0000

Answer:

x ≈ 3.4 cm

Explanation:

Using the sine ratio in the right triangle

sin57° =
(opposite)/(hypotenuse) =
(x)/(4) ( multiply both sides by 4 )

4 × sin57° = x , thus

x ≈ 3.4 cm ( to 1 dec. place )