Question

Х
F
E
53°
6.3
D
Help me please

Answer 1

x ≈ 3.8

Explanation:

Using the cosine ratio in the right triangle

cos53° =
`(adjacent)/(hypotenuse)` =
`(EF)/(DF)` =
`(x)/(6.3)` ( multiply both sides by 6.3 )

6.3 × cos53° = x , then

x ≈ 3.8 ( to the nearest tenth )