Answer:
this type of problem shows up on Brainly sooooo often. so it makes me want to know what the teachers are not showing people. That every comes here to ask about these. hmmm Teachers don't know how to teach some times :/
Step-by-step explanation:
just copy this whole thing down below... copy and paste
Use SOH CAH TOA to recall how the trig functions fit on a triangle
SOH: Sin(Ф)= Opp / Hyp
CAH: Cos(Ф)= Adj / Hyp
TOA: Tan(Ф) = Opp / Adj
the whole thing above is super handy
we know the Hyp and an angle and we want to know the Adj (BC) so use
CAH
Cos(34) = Adj / 9
9*Cos(34) = Adj
7.46133.... =Adj
BC = 7.5 ( rounded to nearest 10th)
