Question

Help me please! It’s timed

Answer 1

x=36.08

Explanation:

Given: From the given triangle DEF, ∠E=
`90^(0)`

DF=55

and DE= x

To find the value of x

According to trigonometry rule,

`(x)/(55) =cos49^(0) \\x=55(cos 49^(0) )\\x=55(0.656)\\x=36.08`

Therefore, the value of x will be 36.08