Trigonometry-cosine rule
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|---|---|---|---|
| 1 | The cosine rule to find an unknown side. [Case 1 SAS]. | Info | Go |
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Objective: On completion of the lesson the student will be able to use the cosine rule to find the length of an unknown side of a triangle knowing 2 sides and the included angle. |
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| 2 | The cosine rule to find an unknown angle. [Case 2 SSS]. | Info | Go |
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Objective: On completion of the lesson the student will be able to find the size of an unknown angle of a triangle using the cosine rule given the lengths of the 3 sides. |
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