Шпаргалка: Формулы и шпоры 10-11 кл. (информатика, геометрия, тригонометрия ...) (Шпаргалка)

cos(2π-)=cos

tg(2π-)=-tg

ctg(2π-)=-ctg

sin(2π+)=sin

cos(2π+)=cos

tg(2π+)=tg

ctg(2π+)=ctg

sin(π/2-)=cos

cos(π/2-)=sin

tg(π/2-)=ctg

ctg(π/2-)=tg

sin(π/2+)=cos

cos(π/2+)=-sin

tg(π/2+)=-ctg

ctg(π/2+)=-tg

sin(3π/2-)=-cos

cos(3π/2-)=-sin

tg(3π/2-)=ctg

ctg(3π/2-)=tg

sin(3π/2+)=-cos

cos(3π/2+)=sin

tg(3π/2+)=-ctg

ctg(3π/2+)=-tg

cos(α+β)=cosαcosβ-sinαsinβ

sin(α+β)=sinαcosβ+cosαsinβ

cos(α -β)=cosαcosβ+sinαsinβ

sin(α –β)=sinαcosβ-cosαsinβ

tg(+)=(tg+tg)/(1-tg tg)

tg(-)=(tg-tg)/(1+tg tg)