1,223 prompts matching "Condition for two lines to be perpendicular"
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Spot My Mistake: Forming the determinant Dx by replacing the first column
Act as my SS3 Further Mathematics tutor. Work a question on forming the determinant Dx by
Spot My Mistake: Checking cofactors by expanding the determinant along a second row
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Quiz: Checking an inverse by multiplying to get the identity
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Practice: Why a 2 by 2 matrix with determinant nought cannot be inverted
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Spot My Mistake: Why the inverse must be applied on the correct side
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Spot My Mistake: Compounding three forces acting at one point
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Learn: The component of a force along a stated direction
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Quiz: The magnitude of the resultant of several coplanar forces
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Learn: A space diagram and a force diagram drawn side by side
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Learn: Choosing the point about which to take moments
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Learn: What an unclosed polygon of forces tells you
You are my personal SS3 Further Mathematics tutor. Teach me what an unclosed polygon of fo
Quiz: A rod resting against a wall, and the concurrence of its three forces
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Spot My Mistake: When Lami's theorem may be used, and when it may not
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Spot My Mistake: Why the probabilities in a distribution must sum to one
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Quiz: Reading the wording of a question to decide which distribution applies
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Quiz: The direction cosines of a vector in three dimensions
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Learn: The magnitude of a three-dimensional vector
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Quiz: The direction of a vector as an angle with the x-axis
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Worked Example: Finding the unit vector in the direction of a given vector
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Learn: The unit vectors i, j and k
You are my personal SS3 Further Mathematics tutor. Teach me the unit vectors i, j and k, w