Quiz: The Cosine Rule
Edexcel GCSE Mathematics (1MA1)
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Welcome to this quiz on the cosine rule! Let's test your understanding with these 10 questions.
Which formula represents the cosine rule for finding the length of a side?
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In which scenarios can the cosine rule be applied? (Select all that apply.)
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The cosine rule states that a² = b² + c² - 2bc cos {{blank0}}, where {{blank1}} is the included angle.
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What is the primary advantage of using the cosine rule over the sine rule?
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Match the items on the left with their correct pairs on the right
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To find an angle using the cosine rule, the formula is rearranged to cos A = (b² + c² - a²) / (2bc). This requires knowing the lengths of all three {{blank0}} and the angle opposite the unknown side.
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