The law of sines Quiz

Name: ______________________   Date: __________   Score: ____ / 10

10 questions. Calculator allowed. Show your working. steplyclass.com/trigonometry/the-law-of-sines/quiz/

1. 1

   Triangle A = 40°, B = 60°, a = 8, find b
   1. A) b ≈ 108
   2. B) b ≈ 10.8
   3. C) b ≈ 1.08

2. 2

   Triangle A = 30°, B = 45°, a = 10, find b

   Answer: ____________________

3. 3

   Triangle B = 35°, C = 80°, b = 9, find c
   1. A) c ≈ 1.55
   2. B) c ≈ 15.5
   3. C) c ≈ 155

4. 4

   Triangle A = 30°, B = 90°, b = 14, find a

   Answer: ____________________

5. 5

   Triangle A = 45°, B = 75°, c = 10, find a
   1. A) a ≈ 60
   2. B) a ≈ 82
   3. C) a ≈ 0.82
   4. D) a ≈ 8.2

6. 6

   Triangle A = 25°, B = 110°, c = 8, find b

   Answer: ____________________

7. 7

   Triangle A = 65°, B = 45°, c = 11, find b
   1. A) b ≈ 83
   2. B) b ≈ 0.83
   3. C) b ≈ 8.3
   4. D) b ≈ 70

8. 8

   Triangle A = 40°, a = 7, b = 9, find B

   Answer: ____________________

9. 9

   Triangle A = 45°, a = 10, b = 12, find B
   1. A) 121.9°
   2. B) B ≈ 58.1° or 121.9°
   3. C) B ≈ 58.1°

10. 10

    Triangle A = 50°, a = 12, b = 9, find B

    Answer: ____________________