AC=sin15*16
=√((1-cos30)/2) *16
BC=cos15*16
=√((1+cos30)/2) *16
S三角形=1/2(√((1-cos30)/2) *16)(√((1+cos30)/2) *16)
=(1/2)(1/4)16*16
=32
AC=sin15*16
=√((1-cos30)/2) *16
BC=cos15*16
=√((1+cos30)/2) *16
S三角形=1/2(√((1-cos30)/2) *16)(√((1+cos30)/2) *16)
=(1/2)(1/4)16*16
=32