Sine rule, cosine rule and area

1. 1.
   In triangle ABC, angle A = 50°, angle B = 65° and a = 9. Find b, to one decimal place.
2. 2.
   In triangle ABC, angle A = 30°, angle B = 75° and a = 10. Find b, to one decimal place.
3. 3.
   A triangle has sides 4 cm and 6 cm with an angle of 50° between them. Find its area in cm², to one decimal place.
4. 4.
   A triangle has sides 4 cm and 11 cm with an angle of 150° between them. Find its area in cm², to one decimal place.
5. 5.
   In triangle ABC, angle A = 50°, angle B = 35° and a = 10. Find b, to one decimal place.
6. 6.
   A triangle has sides 5 cm and 10 cm with an angle of 40° between them. Find its area in cm², to one decimal place.
7. 7.
   In triangle ABC, angle A = 30°, angle B = 65° and a = 5. Find b, to one decimal place.
8. 8.
   In triangle ABC, angle A = 60°, angle B = 35° and a = 6. Find b, to one decimal place.
9. 9.
   A triangle has sides 6 cm and 6 cm with an angle of 70° between them. Find its area in cm², to one decimal place.
10. 10.
    In triangle ABC, angle A = 30°, angle B = 35° and a = 15. Find b, to one decimal place.
11. 11.
    A triangle has sides 10 cm and 12 cm with an angle of 40° between them. Find its area in cm², to one decimal place.
12. 12.
    In triangle ABC, a = 5, b = 5 and angle C = 40°. Find c, to one decimal place.
13. 13.
    A triangle has sides 11 cm and 12 cm with an angle of 150° between them. Find its area in cm², to one decimal place.
14. 14.
    In triangle ABC, a = 5, b = 5 and angle C = 70°. Find c, to one decimal place.
15. 15.
    In triangle ABC, a = 10, b = 11 and angle C = 40°. Find c, to one decimal place.
16. 16.
    A triangle has sides 7 cm and 5 cm with an angle of 120° between them. Find its area in cm², to one decimal place.
17. 17.
    In triangle ABC, angle A = 60°, angle B = 55° and a = 14. Find b, to one decimal place.
18. 18.
    In triangle ABC, angle A = 60°, angle B = 35° and a = 15. Find b, to one decimal place.
19. 19.
    In triangle ABC, angle A = 30°, angle B = 75° and a = 14. Find b, to one decimal place.
20. 20.
    In triangle ABC, angle A = 60°, angle B = 45° and a = 8. Find b, to one decimal place.

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