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Solve the triangle with the given parts:

- Angle B = 39.8°
- Angle Y = 113.0°
- Side b = 25.30

Possible solutions:

A. Angle A = 25.2°, Side a = 36.4, Angle C = 18.1
B. Angle A = 25.2°, Side a = 38.4, Side c = 20.1
C. Angle A = 27.2°, Side a = 18.1, Angle C = 36.4
D. Angle A = 27.2°, Side a = 20.1, Side c = 38.4

Answer :

Final answer:

To solve the given triangle, use the law of sines and law of cosines. Determine angle C using the angle sum property, then use the law of sines to find sides a and b. Use the law of cosines to find side c.

Explanation:

To solve the given triangle, we can use the law of sines and law of cosines. First, we need to determine the angle C using the angle sum property of a triangle. Then, we can use the law of sines to find the lengths of sides a and b. Finally, we can use the law of cosines to find the remaining side c.

  1. Using the angle sum property, we can find angle C = 180° - B - y = 27.2°.
  2. Using the law of sines, we can find side a = (b * sin(A)) / sin(C) = 18.1.
  3. Using the law of sines again, we can find side b = (a * sin(B)) / sin(C) = 20.1.
  4. Finally, using the law of cosines, we can find side c = sqrt(a^2 + b^2 - 2ab*cos(C)) = 38.4.

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