1,474 prompts matching "A Pythagoras problem set in three dimensions"
WAEC pitfalls: Quoting a special angle ratio as a decimal when an exact value is asked for
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Worked example: Finding the height of a mast from its angle of elevation
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WAEC pitfalls: Taking the angle from the vertical instead of the horizontal
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Worked example: Using the power law to simplify a logarithmic expression
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WAEC pitfalls: Treating the logarithm of a sum as the sum of logarithms
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Worked example: Bringing a negative number into the right residue class
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WAEC pitfalls: Reducing to a residue outside the permitted range
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Teach me: What a set is, and how one is written
You are my personal SS1 Mathematics tutor. Teach me what a set is, and how one is written,
Practice set: The empty set and the universal set
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Spot my mistake: Subsets, and how many a set has
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Teach me: All the members of two sets together
You are my personal SS1 Mathematics tutor. Teach me all the members of two sets together,
Practice set: The difference of two sets
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Worked example: The formula for the number in a union
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WAEC pitfalls: Counting the overlap twice in a union
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Worked example: The converse, inverse and contrapositive
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WAEC pitfalls: Negating a statement containing all or some
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WAEC pitfalls: Filling a truth table column out of order
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Worked example: Changing the subject when the letter occurs on both sides
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WAEC pitfalls: Applying an inverse operation to only part of a side
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Worked example: Using the constant to predict a further value
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