1. The General Triangle C B A

2. The General Triangle a C B A

3. The General Triangle a C B b A

4. The General Triangle a C B c b A

5. The Sine Rule B a c C A b

6. Find c in the triangle below
Example
Find c in the triangle below c
7 cm
60
50

7. Find a in the triangle below
Example
Find a in the triangle below a
8 cm
27
110

8. Find x in the triangle below
Example
Find x in the triangle below x
10.6 cm
54
40

9. Find the size of angle B in the triangle below
Example
Find the size of angle B in the triangle below
15cm
120 A B C
6cm

10. Find the size of angle A in the triangle below
Example
Find the size of angle A in the triangle below B
70
24cm C
11cm A

11. Find the size of angle R in the triangle below
Example
Find the size of angle R in the triangle below P
18.5cm
10.5cm R
85 Q

12. Example
In triangle ABC, AC = 3cm, angle B = 40 and angle A = 65. Find the length BC.
In triangle ABC, AB = 6m, angle B = 25 and angle C = 110. Find AC.