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25 March 2015
- (diff | hist) . . m Trigonometry/A Brief History of Trigonometry; 14:24 . . (-12) . . Atcovi (Reverted edits by 22.214.171.124 (talk) to last version by Leaderboard)
- (diff | hist) . . Trigonometry/A Brief History of Trigonometry; 14:03 . . (+12) . . 126.96.36.199 (→The Pythagorean Theorem)