The sine rule
The sine rule enables you to calculate sides and angles in triangles that do
not include a right angle.
The cosine rule
Example 1
1. Find the vertical height of the triangle ABC.
2. Find the length of side c.
Example 2
Find the size of angle B.
Example 3
Find the length of side b.
Example 4
Find the size of angle C.
Example 5
ANSWERS