F. r.e. e p. o.i. n.t. s.
1+1+1+1+1 is equal to what?

A80-foot piece of siding is cut into three pieces so that the second piece is four times four times as long as the first piece and the third piece is five times as long as the first piece. if x represents the length of the first piece, find the lengths of all three pieces.

Guys i really need or i have to stay late up night

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.