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Braga, Braga, Portugal



sen(-x) = -sen x
cos(-x) = cos x
cos2x + sen2x = 1
1 + tan2x = sec2x
1 + cot2x = csc2x
sen 2x = 2sen x . cos x
cos 2x = cos2x – sen2x
sen2(x/2) = (1-cos x) / 2
cos (x/2) = (1 + cos x) / 2
sec2x = 1 + tg2x
cosses2x = 1 + cotg2x
Fórmulas de Adição e Subtração
sen ( a + b ) = sen a . cos b + sen b . cos a
sen ( a – b ) = sen a . cos b – sen b . cos a
cos ( a + b ) = cos a . cos b – sen a . sen b
cos ( a – b ) = cos a .cos b + sen a . sen b
Bons Estudos!