тригонометрия формулалары

sin(α+в)=

• sin(α+в)=sinαcosв-cosαsinв

• sin(α+в)=sinαcosв+cosαsinв

• sin(α+в)=sinαcosa+cosαsina

• sin(α+в)=sinαsinв+

  cosacosв

sin(α-в)=

• sin(α-в)=sinacosв-cosasinв

• sin(α-в)=

  sinacosв+cosasinв

• sin(α-в)=sinasinв-cosacosв

• sin(α-в)= sinasinв+cosacosв

cos(α+в)=

• cos(α+в)=сosacosв+sinasinв

• cos(α+в)=

  сosacosв-sinasinв

• cos(α+в)=

  сosacosа-sinвsinв

• cos(α-в)=

  сosacosв-sinasinв

cos(α-в)=

• cos(α-в)=

  cosasinв+sinacosв

• cos(α-в)=

  cosacosв-sinasinв

• cos(α-в)=

  cosacosв+sinasinв

• cos(α-в)=

  cosasinв+sinacosв

sin2α=

• sin2α=sinвcosa

• sin2α=2cosаsinв

• sin2α=2sinаcosв

• sin2α=2sinacosa

cos2 α=

• cos2 α=

  cos² α-sin² α

• cos2 α=

  cos² α+sin² α

• cos2 α=

  sin² α-cos² α

• cos2 α=

  sin² α+cos² α

tg2 α=

• tg2 α=

  2tga/1+tg² α

• tg2 α=

  2tga/1-tg² α

• tg2 α=

  1-tg² α/2tgα

• tg2 α=

  1+tg² α/2tgα

ctg2 α=

• ctg2 α=

  1/2(ctg α-tg α)

• ctg2 α=

  1/2(ctg α+tg α)

• ctg2 α=

  1/2(tg α-ctg α)

• ctg2 α=

  1/2(tg α+ctg α)