1,326 prompts matching "Solve the trigonometric equation cos^2(x) - sin^2(x) = 0.5, for 0 <= x <= 360"
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WAEC Prep: Why friction is called a self-adjusting force
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WAEC Prep: Friction, and the direction in which it acts
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Quiz: The coefficient of friction between two surfaces
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Practice: Limiting friction, and the greatest value it can reach
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Spot My Mistake: Why friction does not depend on the area of contact
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Learn: The algebraic sum of moments when the senses differ
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WAEC Prep: Using concurrence to locate an unknown line of action
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Practice: Resolving three forces in two perpendicular directions
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Spot My Mistake: Finding two unknown tensions from three forces in equilibrium
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WAEC Prep: The statement of Lami's theorem
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Spot My Mistake: When Lami's theorem may be used, and when it may not
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WAEC Prep: A random variable, and the values it may take
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Explain Back: A probability distribution table for a discrete random variable
I have just studied a probability distribution table for a discrete random variable in my
Spot My Mistake: Why the probabilities in a distribution must sum to one
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Learn: The expectation of a discrete random variable
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WAEC Prep: The binomial expansion of a plus b all to the power n
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Learn: Finding the coefficient of a stated power in an expansion
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WAEC Prep: The four conditions a binomial situation must satisfy
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Spot My Mistake: The probability of exactly r successes in n trials
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Practice: The probability of at least one success
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