СВ=sqrt(AB^2-AC^2)=7
sinA=CB/AB=7/14=1/2
AB^2=AC^2+BC^2
14^2=()^2+BC^2
BC^2=49
BC=7
sinA=CB/AB
sinA=7/14
sinA=1/2
СВ=sqrt(AB^2-AC^2)=7
sinA=CB/AB=7/14=1/2
AB^2=AC^2+BC^2
14^2=(
)^2+BC^2
BC^2=49
BC=7
sinA=CB/AB
sinA=7/14
sinA=1/2