744 prompts matching "IGCSE practice: Drawing the elevation triangle before calculating"
Spot my mistake: Adding vectors by adding their magnitudes
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Worked example: Finding the magnitude and direction of a vector
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WAEC pitfalls: Dropping the negative sign when reversing a vector
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Explain back: The midpoint of a line segment in vector form
I have just studied the midpoint of a line segment in vector form in my SS3 Mathematics cl
Spot my mistake: Subtracting the position vectors in the wrong order
Act as my SS3 Mathematics tutor. Work a question on subtracting the position vectors in th
Spot my mistake: Adding the column vector to the wrong coordinate
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Worked example: Finding the translation that maps one shape onto another
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Explain back: Reflecting a point in the line y equals x
I have just studied reflecting a point in the line y equals x in my SS3 Mathematics class.
Spot my mistake: Reflecting in an axis but keeping the original sign
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Worked example: Finding the mirror line from an object and its image
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Explain back: Rotating a point 180 degrees about the origin
I have just studied rotating a point 180 degrees about the origin in my SS3 Mathematics cl
Spot my mistake: Rotating clockwise when the question says anticlockwise
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Worked example: Finding the angle of rotation from an object and its image
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Spot my mistake: Measuring the scale factor from the wrong centre
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Worked example: Finding the centre of enlargement from object and image
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Explain back: The inverse of a 2 by 2 matrix and the formula for it
I have just studied the inverse of a 2 by 2 matrix and the formula for it in my SS3 Mathem
Spot my mistake: Forgetting to swap the leading diagonal when inverting
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Worked example: Verifying an inverse by multiplying back to the identity
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Explain back: Solving by multiplying through by the inverse matrix
I have just studied solving by multiplying through by the inverse matrix in my SS3 Mathema
Spot my mistake: Multiplying by the inverse on the wrong side
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