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Tag: Problem Solving
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AMC 12 Trigonometry: A Unit-Circle Diagnostic for Identity and Equation Questions
A practical AMC 12 trigonometry diagnostic for identity and equation questions. Use four checkpoints—quadrant signs, identity route, interval restriction, and back-substitution—to classify and correct timed errors.
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Training for the AIME, Not the AMC: What Changes When the Answer Choices Disappear
The AIME asks for 15 integer answers and, from 2027, runs as two 90-minute parts at a Pearson centre. No answer choices means backsolving stops working – and the qualifying line is now a fixed 100 or 85, not a percentile.