Quiz: The Cosine Rule
Edexcel GCSE Mathematics (1MA1)
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Building on what you've learned about trigonometry, let's test your knowledge of **The Cosine Rule**!
What is the general formula for the Cosine Rule?
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Which of the following are true about the Cosine Rule? (Select all that apply)
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The Cosine Rule is used when we know two sides and the {{blank0}} between them, or all three sides of a triangle.
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Find the length of side a in a triangle where b = 5, c = 7, and angle A = 60°. Use the Cosine Rule.
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When is the Cosine Rule more useful than the Sine Rule?
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Match the items on the left with their correct pairs on the right
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The Cosine Rule involves the cosine of an {{blank0}}.
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Match the items on the left with their correct pairs on the right
Calculate the cosine of angle A if a = 8, b = 6, and c = 10.
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What is the next step after calculating cos A using the Cosine Rule?
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