622 prompts matching "checking each line of a trigonometric identity proof"
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Worked Example: What makes two surds equal
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Final Revision: Surds that cannot be combined at all
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Worked Example: Adding two surds that simplify to the same root
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WAEC Prep: Squaring a single surd
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Final Revision: Simplifying a fraction whose numerator and denominator are both surds
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Worked Example: Rationalising a denominator that is a single surd
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WAEC Prep: Rationalising a denominator inside a larger expression
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Final Revision: Expressing a rationalised answer in the form a root b over c
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Worked Example: Why multiplying by the conjugate clears the surd
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WAEC Prep: Expressing the answer in the form a plus b root c
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Worked Example: Squaring both sides safely when solving a surd equation
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Common Mistakes: A surd equation that has no real solution
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Final Revision: A word problem that leads to an equation in surd form
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Worked Example: Reading the symbol used for a binary operation
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WAEC Prep: Writing a binary operation rule from a description in words
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Common Mistakes: A binary operation that is ordinary addition in disguise
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Final Revision: Deciding whether a given rule really is a binary operation
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Worked Example: Testing the even numbers for closure under addition
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WAEC Prep: A set closed under one operation but not another
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Final Revision: Why closure is checked before any other property
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