1,326 prompts matching "Solve the trigonometric equation cos^2(x) - sin^2(x) = 0.5, for 0 <= x <= 360"
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Explain Back: The compound angle formula for tan of A plus B
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Show All Working: The half angle formulae and the t-substitution
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Explain Back: The effect of b in y equals sin bx on the period
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Common Mistakes: Sketching two trigonometric curves on the same axes to find where they meet
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Worked Example: The midpoint formula applied to a given segment
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Explain Back: The equation of the line through two given points
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Spot My Mistake: The general form ax plus by plus c equals nought
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Worked Example: The equation of a circle with a given centre and radius
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Common Mistakes: The condition for a line to be a tangent to a circle
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Worked Example: The parametric form of a point on a parabola
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Practice: The ellipse in standard form, and its two axes
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WAEC Prep: The standard deviation of grouped data using an assumed mean
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Common Mistakes: The coefficient of variation, for comparing two sets
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Learn: The moment of a force about a point, and its units
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Worked Example: The sign convention for clockwise and anticlockwise moments
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Quiz: The principle of moments for a body in equilibrium
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Common Mistakes: The centre of gravity of a uniform lamina
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Final Revision: The distance connected particles travel before one reaches the floor
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Practice: The frictional force on a body on a rough incline
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Spot My Mistake: The least force needed to move a body up a rough incline
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