1,138 prompts matching "IGCSE practice: A histogram set against a bar chart"
Worked example: A two-step problem needing two ratios
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Word problem: Trigonometry combined with Pythagoras in one triangle
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WAEC pitfalls: Labelling the sides relative to the wrong angle
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Worked example: The reference angle for an angle beyond 90 degrees
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Word problem: Finding an angle from a ratio, in a given range
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WAEC pitfalls: Quoting a special angle ratio as a decimal when an exact value is asked for
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Nigerian scenario: Special angles in a described construction problem
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Worked example: Finding the height of a mast from its angle of elevation
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Word problem: A depression problem where the observer's height is given
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WAEC pitfalls: Taking the angle from the vertical instead of the horizontal
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Nigerian scenario: Sighting a building or mast in a Nigerian town
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Worked example: Using the power law to simplify a logarithmic expression
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Word problem: Evaluating a logarithm without a table
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WAEC pitfalls: Treating the logarithm of a sum as the sum of logarithms
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Nigerian scenario: Logarithmic scales in a described measurement
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Worked example: The shape of a logarithmic graph
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Word problem: Logarithms on a scientific calculator
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WAEC pitfalls: A negative characteristic written the wrong way
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Nigerian scenario: A calculation from Nigerian trade done with logarithms
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Worked example: Bringing a negative number into the right residue class
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