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3 years ago

15

Use ΔDEF, shown below, to answer the question that follows: Triangle DEF where angle E is a right angle. DE measures 55. EF meas

ures x. Angle D measures 49 degrees. What is the value of x rounded to the nearest hundredth?

2 answers:

pochemuha3 years ago

5 0

63. 27. Tan 49/1= X/55

fredd [130]3 years ago

3 0

Answer:

$x=63.27$ units

Step-by-step explanation:

It is given that ΔDEF is a right angled triangle which is right angled at E, also the measure of DE is 55 and EF is x with an ∠D=49°.

Using the trigonometry, we have

$tan49^{{\circ}}=\frac{EF}{DE}$

⇒ $(1.15)=\frac{x}{55}$

⇒ $x=63.27$ units

Thus, the value of EF= 63.27 units.

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Answer:

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Step-by-step explanation:

Given

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Required

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Differentiate F(x) to give:

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$f(v) = \left \{ {{\frac{1}{3}v^{-\frac{2}{3}}\ 9^3 \le v \le 10^3} \atop {0, elsewhere}} \right.$

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