Core Mathematics

1Find the area of a triangle with sides 6 cm and 11 cm and included angle 70°, to 1 decimal place.

2The area of a triangle with sides 6 cm and 5 cm and an included angle of 30° is ___ cm².

3Find the area of a triangle with sides 7 cm and 4 cm and included angle 70°, to 1 decimal place.

4In triangle ABC, a = 15 cm, B = 40° and C = 65°. Find b, to 1 decimal place.

5Find the area of a triangle with sides 10 cm and 11 cm and included angle 70°, to 1 decimal place.

6In triangle ABC, b = 9 cm, c = 8 cm and A = 30°. Find a, to 1 decimal place.

7The largest side is opposite the smallest angle.

8The area of a triangle with sides 8 cm and 10 cm and an included angle of 30° is ___ cm².

9The area of a triangle can be found using ½ab sin C.

10In triangle ABC, b = 12 cm, c = 10 cm and A = 120°. Find a, to 1 decimal place.