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Use the law of sines to find the value of w.

Triangle U V W is shown. Angle V W U is 39 degrees and angle W U V is 31 degrees. The length of V W is 3.3 centimeters and the length of U V is w.

Law of sines: StartFraction sine (uppercase A) Over a EndFraction = StartFraction sine (uppercase B) Over b EndFraction = StartFraction sine (uppercase C) Over c EndFraction

What is the best approximation of the value of w?

1.4 cm
4.0 cm
6.0 cm
7.3 cm

Respuesta :

Option B: 4.0 cm is the value of w

Explanation:

It is given that [tex]\angle W= 39[/tex], [tex]\angle U=31[/tex], [tex]VW=3.3[/tex] and [tex]UV=w[/tex]

Using the law of sines, we have,

[tex]\frac{sin U}{3.3} =\frac{sin W}{w}[/tex]

Substituting the values, we have,

[tex]\frac{\sin 31}{3.3}=\frac{\sin 39}{w}[/tex]

Cross multiplying, we get,

[tex](sin31) w=3.3( \sin 39)[/tex]

Simplifying, we have,

[tex]0.515w=2.077[/tex]

Dividing both sides by 0.515, we have,

[tex]w=4.0[/tex]

Thus, the value of w is 4.0 cm

Hence, Option B is the correct answer.

Answer:

it is the answer b 4.0 cm

Step-by-step explanation:

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