1,330 prompts matching "Adding two surds that simplify to the same root"
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Practice: Choosing the most convenient pair of directions to resolve along
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WAEC Prep: The triangle of forces used together with the cosine rule
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Spot My Mistake: Drawing the triangle of forces to scale to find an unknown force
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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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Worked Example: Drawing the polygon of forces to scale
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Explain Back: The units of a moment, and why they are newton metres
I have just studied the units of a moment, and why they are newton metres in my SS3 Furthe
WAEC Prep: The resultant moment of a couple and a force together
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Worked Example: The total moment of three parallel forces about one end
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Quiz: The point about which the total moment of a set of forces vanishes
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WAEC Prep: The triangle of forces and concurrence taken together
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Spot My Mistake: Using concurrence to find the direction of an unknown third force
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WAEC Prep: The conditions for a particle under three forces to be in equilibrium
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Worked Example: Matching each force to the sine of the angle opposite it
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Spot My Mistake: Why the probabilities in a distribution must sum to one
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WAEC Prep: Expanding p plus q, all to the power n, as a probability model
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WAEC Prep: The binomial expansion of a plus b all to the power n
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WAEC Prep: Using the mean of a Poisson distribution to find a probability
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WAEC Prep: Why the total area under the normal curve is one
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WAEC Prep: The probability that a normal variable lies below a given value
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