А=30 град
С=90 град
В=90-30=60 град
sinA=sin 30=1/2
sinB=sin60=sqr3/2
cosA=cos30=sqr3/2
cos B=cos60=1/2
tgA=sinA:cosA=1/2 : sqr3/2 =sqr3/3
tgB=sinB:cosB=sqr3/2 : 1/2=sqr3
А=30 град
С=90 град
В=90-30=60 град
sinA=sin 30=1/2
sinB=sin60=sqr3/2
cosA=cos30=sqr3/2
cos B=cos60=1/2
tgA=sinA:cosA=1/2 : sqr3/2 =sqr3/3
tgB=sinB:cosB=sqr3/2 : 1/2=sqr3