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s2008m [1.1K]
3 years ago
11

Help me please! It’s timed

Mathematics
1 answer:
Scrat [10]3 years ago
3 0

Answer:

x=36.08

Step-by-step 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,

\frac{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

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