log6(16)=log6(2^4)=4log6(2)=4/log2(3*2)= log12(2)=a log2(12)=1/a
=4/(log2(3)+log2(2))=4/(log2(3)+1) log2(3*4)=1/a log2(3)+log2(4)=1
log6(16)=4/(1/a-2+1)=4a/(1-a) log2(3)+2=1/a log2(3)=1/a-2
15sin84° / sin 42°*sin 48°=30sin42cos42/sin42*sin48=30cos42/sin48=
=30cos(90-48)/sin48=30sin48/sin48=30
Теперь все верно я записал?