how do i solve this? i'm suppose for solve x
(Cotx)(Cosx)= Cosx
umm...i suppose you just want us to factor this.
tan(x) is common to the first two terms, 5 is common to the last two, so pull those out, we get:
now the 4sin(x) - 3 is common to both terms, so pull that out, we get:
and we're done
Aside: post new questions in a new thread