Total
Clasificado en Matemáticas
Escrito el en español con un tamaño de 5,11 KB
Pitagoricas: sn(a+b) =sna·cosb+cosa·snb cos(a+b) =cosa·cosb-sna·snb tg(a+b)= tga+tgb / 1-tga·tgb sn2a=2·sna·cosa cos2a=cos2a-sn2a tg2a= 2tga / 1-tg2a sn a/2= ?1-cosx/2 (todo dntro) cos a/2= ?1+cosa/2 (todo dntro ) tg a/2=?1-cosa/1+cosa (todo dntro ) sna+snb=2sn a+b/2 · cos a-b/2 sna-snb=2cos a+b/2 · sn a-b/2 cosa+cosb=2cos a+b/2 · cos a-b/2 cosa-cosb= -2sn a+b/2 · sn a-b/2 | Identidades Trigonometricas: sen2x + cos2x = 1 1 + tan2x = sec2x 1 + cot2x = csc2x tan x = sen x / cos x csc x = 1 / sen x sec x = 1 / cos x cot x = 1/ tan x = cosx/senx 1 + cotg²a = cosec²a sin (a + b) = sina · cosb + cosa· sinb cos (a + b) = cosa · cosb - sina· sinb sin (a - b) = sina · cosb - cosa· sinb cos (a - b) = cosa · cosb + sina· sinb sin2a = 2sina · cosa cos2a = cos²a - sin²a tg2a = 2tga / 1-tg²a sin(a/2) = ±a(1-cosa)/(2) cos(a/2) = ±a(1+cosa)/(2) tg(a/2) = ±a(1-cosa)/(1+cosa) sinA+sinB =2 · sin(A+B)/2 · cos(A-B)/2 sinA-sinB =2 · cos (A+B)/2· sin(A-B)/2 cosA+cosB =2 · cos(A+B)/2 · cos(A-B)/2 cosA-cosB =-2 · sin(A+B)/2 · sin(A-B)/2 cos a = cat ady / hip => sec a sen a = cat op / hip => cosec a tan a = cat op / cat ady => cotg a sen a / cos a |
---|---|
|