Pythagoras and trigonometry
Lesson 6 of 14
Review
Sine and cosine rules
Objective. Solve non-right-angled triangles.
- 1. Learn
- 2. Worked example
- 3. Practice
- 4. Feedback
- 5. Continue
Learn: the key idea
Use the sine rule when you have a matching side–angle pair, and the cosine rule when you have two sides and the angle between them.
Concept mastery
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