1,320 prompts matching "Finding the equation of a circle from its centre and radius"
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Learn: Solving a linear inequality, and reversing the sign on dividing by a negative
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Worked Example: Solving a quadratic inequality by sketching the parabola
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Explain Back: Arrangements in which two particular objects must stay together
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Worked Example: The difference between a permutation and a combination
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Spot My Mistake: The identity that n choose r equals n choose n minus r
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Learn: The Pythagorean identity, sin squared plus cos squared equals one
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Worked Example: The identities for one plus tan squared and one plus cot squared
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Spot My Mistake: The double angle formula for sine
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Learn: The distance between two points
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Worked Example: The midpoint formula applied to a given segment
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Spot My Mistake: The general form ax plus by plus c equals nought
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Worked Example: The sign convention for clockwise and anticlockwise moments
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Worked Example: Relative velocity when two bodies move along the same line
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Explain Back: The course to steer so that a boat crosses straight over
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Learn: Resolving the weight along and perpendicular to an inclined plane
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Worked Example: The normal reaction on a body resting on a smooth incline
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Spot My Mistake: The least force needed to move a body up a rough incline
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Explain Back: The displacement written as x equals a sin omega t
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Spot My Mistake: The time taken to move between two points in simple harmonic motion
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Worked Example: The tension in a stretched elastic string
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