1,292 prompts matching "Substituting values into an algebraic expression"
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WAEC Prep: A unit vector, and what makes it a unit
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Learn: The unit vectors i, j and k
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WAEC Prep: The distance between two points from their position vectors
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Worked Example: The triangle law of vector addition
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Learn: Subtracting one vector from another
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Practice: The dot product as the magnitudes times the cosine of the angle
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WAEC Prep: The angle between two three-dimensional vectors
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WAEC Prep: Showing a triangle is right-angled using the dot product
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WAEC Prep: Finding the angle between two vectors from their dot product
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Learn: The angle between a vector and one of the axes
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WAEC Prep: The resultant force on a particle given in i and j form
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WAEC Prep: Writing a force as a vector in i and j form
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Explain Back: The resultant of forces given as vectors
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WAEC Prep: The imaginary unit i, and why i squared is minus one
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Worked Example: The powers of i, and the cycle they follow
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Learn: The real and the imaginary parts of a complex number
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WAEC Prep: The geometric meaning of adding two complex numbers
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Quiz: Subtracting one complex number from another
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Practice: Equating real and imaginary parts to find two unknowns
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Spot My Mistake: Dividing one complex number by another using the conjugate
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