Question

4. Given a = 10.2, A = 122 degrees, and b = 6.8, use the Law of Sines to solve for B. Round your answer to the nearest degree.

5. Given a = 15, A = 36 degrees, and B = 70. use the Law of Sines to solve for b. Round your answer to the nearest whole number.

6. Given a = 9, b = 4, and c = 7, use the Law of Cosines to solve for A. Round your answer to the nearest degree.

Answer 1

4) 34° (nearest degree)

5) 24 (nearest whole number)

6) 107° (nearest degree)

Explanation:

Please see the attached picture for the full solution.

Q6: 107° is the angle in the 2nd quadrant.

(180° -73.398°≈ 107°)

Picture 2: Law of Sines