Using Sine and Cosine Rules in Geometry

Explore how to determine missing lengths and angles in triangles using the sine and cosine rules. Understand when to apply each rule based on available information. See examples and illustrations to enhance your understanding.

• Geometry
• Sine Rule
• Cosine Rule
• Triangle
• Math

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Uploaded on Feb 17, 2025 | 1 Views

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Presentation Transcript

1. Discuss: What information must we have to use the sine rule to calculate a missing length?

2. Two angle and one corresponding side

3. Discuss: What information must we have to use the sine rule to calculate a missing angle?

4. Two sides and one corresponding angle

5. Discuss: What information must we have to use the cosine rule to calculate a missing length?

6. Two sides and the angle between them

7. Discuss: What information must we have to use the cosine rule to calculate a missing angle?

8. All three sides are needed to calculate a missing angle

9. Sine or Cosine? ?

10. Sine or Cosine?

11. Sine or Cosine? ?

12. Sine or Cosine?

13. Sine or Cosine?

14. Find all the missing lengths within this 10 x 10 square