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Matematica-Trigonometrie [1] Formule Pentru Sinus, Cosinus, Tangenta Si Cotangen

This is the first 1,000 characters of 184 words (0.74 pages) in the essay titled Matematica-Trigonometrie [1] Formule Pentru Sinus, Cosinus, Tangenta Si Cotangen

Matematica-Trigonometrie             [1]  Formule pentru sinus, cosinus, tangenta si cotangenta


Formule pentru sin(a+b), cos(a+b), sin(a-b), cos(a-b) ;
            cos (a - b) = cos a * cos b + sin a * sin b


            cos (a + b) = cos a * cos b sin a * sin b


            sin (a - b) = sin a * cos a sin b * cos b


            sin (a + b) = sin a * cos a + sin b * cos b


            sin ( - x) = cos x


            cos ( - x) = sin x


            tg (a + b) =


            tg (a b) =  

Formule pentru dublul unui unghi



            sin 2x = 2 sin x cos x


            cos 2x = cos2x sin2x


                        cos 2x = 1 2 sin2x


                        cos 2x = 2 cos2x 1


            tg 2x =


            ctg 2x =


Formule pentru jumatatea unui unghi
            


            sin  =


            cos =


            tg =


            tg




[1] Kmeleonu clasa IX-D ma...

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