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Andrew Hacker and the Case of the Missing Trigonometry Question

• gus_massa 11y ago
  Interesting case. IIRC in some test, the students are supposed to remember the angles of the 3-4-5 triangle. I think it was a test form Peru, but I'm not sure. Perhaps the students have to study that for the test, but it was not an actual question of the test. As a mathematician, I consider thirty-something, ninety, fifty-something a good enough answer, but the exact numbers are not very useful. (If you pay me 1 thousand dollars I can try to use the Taylor expansion of arctn to get the exact number with a few decimal places, and for 1 million dollars I can try to remember them.)