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Portable Network Graphic  |  1988-04-19  |  2.2 KB  |  511x341  |  1-bit (2 colors)
   ocr: double angle tormulas half angle formulas sin 2x = 2 sin X COS . X sin X = + 1-coSX 2 2 cos2x - - cos?x - sin?x - - 1 - 2sin2x 2 X=+ + - - 2 +COSX COS - - 2cos2x - 1 tan 2x l 2 tan X tan 2 - = + - - 1-COSX COSX - tan2x table of contents