cosA=AC/AB=3/5
AC=3k,AB=5k
9k^2+64=25k^2
16k^2=64
k^2=4
k=2ork=-2
k>0
k=2
AC=6,AB=10
sinA=BC/AB=8/10=4/5
cosB=BC/AB=8/10=4/5
tanA=BC/AC=8/6=4/3
tanB=AC/BC=6/8=3/4
cosA=AC/AB=3/5
AC=3k,AB=5k
9k^2+64=25k^2
16k^2=64
k^2=4
k=2ork=-2
k>0
k=2
AC=6,AB=10
sinA=BC/AB=8/10=4/5
cosB=BC/AB=8/10=4/5
tanA=BC/AC=8/6=4/3
tanB=AC/BC=6/8=3/4