Finding a side from one half
Finding a side from one half
- Label the sides and angles before choosing a rule.
- Sine rule: matching opposite pairs. Cosine rule: three sides or two sides and the included angle.
- Use degree mode. Keep full calculator accuracy until the final rounding step.
Example 1
The triangle has area
Example 2
The triangle has area
Your turn
Question 1
The triangle has area
Check answer
Question 2
The triangle has area
Check answer
Question 3
The triangle has area
Check answer
Question 4
The triangle has area
Check answer
Question 5
The triangle has area
Check answer
The triangle has area
The triangle has area
The triangle has area
The triangle has area
The triangle has area