1,305 prompts matching "Solving a surd equation that gives an extraneous root"
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Spot My Mistake: Arrangements in which two particular objects must be kept apart
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Learn: The meaning of n choose r, and how to evaluate it
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Worked Example: The difference between a permutation and a combination
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WAEC Prep: Pascal's triangle and the combination numbers in it
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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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Quiz: The compound angle formula for sine of A plus B
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Explain Back: The compound angle formula for tan of A plus B
I have just studied the compound angle formula for tan of A plus B in my SS3 Further Mathe
Spot My Mistake: The double angle formula for sine
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WAEC Prep: The three forms of the double angle formula for cosine
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Explain Back: Solving a quadratic in sin x
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Learn: The shape, period and range of the sine curve
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Worked Example: The shape, period and range of the cosine curve
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Quiz: The tangent curve and its asymptotes
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Learn: The distance between two points
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WAEC Prep: The length of the tangent from an external point
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Learn: The parabola y squared equals 4ax, with its focus and directrix
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Explain Back: The eccentricity of an ellipse
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Spot My Mistake: The foci of an ellipse
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WAEC Prep: The hyperbola in standard form, and its asymptotes
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