1,160 prompts matching "IGCSE Additional Maths Y11: Solving sin x equals nought point five in radians —"
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Explain Back: What a coefficient determinant of nought says about the system
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Practice: Why a 2 by 2 matrix with determinant nought cannot be inverted
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WAEC Prep: Writing two simultaneous equations as a single matrix equation
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Explain Back: Solving two simultaneous equations by multiplying by the inverse
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Practice: What a singular coefficient matrix says about the equations
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WAEC Prep: A three-unknown system arising from a word problem
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WAEC Prep: Writing three simultaneous equations as a single matrix equation
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Quiz: Solving three simultaneous equations with the inverse matrix
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WAEC Prep: The resultant of two equal forces at sixty degrees
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WAEC Prep: Resolving before compounding several forces
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Practice: Choosing the most convenient pair of directions to resolve along
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WAEC Prep: The forces on a body suspended by a single string
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WAEC Prep: The triangle of forces used together with the cosine rule
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Worked Example: Using the sine rule on the triangle of forces
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Practice: Why the forces must sum to nought in two perpendicular directions
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Explain Back: Why the total moment about any point must be nought
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Learn: Choosing the point about which to take moments
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WAEC Prep: The moment of two equal and opposite parallel forces
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WAEC Prep: Using concurrence to locate an unknown line of action
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Spot My Mistake: Using concurrence to find the direction of an unknown third force
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