Answer:
These are kinda tuff Mandi, sooo remember what's below
Explanation:
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
now fine one of the above functions that has the 3 things you are working with. 2 knowns, and 1 unknown
also we know that the angle at the right tip of the triangle is 90-59= 31°
we know that b/c the inside angles of a triangle always add to 180 and there is already a 90° so we only have 80 left, which the 59° is part of, so 31 is the other, now put that info into one of the above formulas
x= adjacent side
and we know the angle and hypotenuse side. find the formula with those parts. I see Cos has those or CAH... to help remember how those fit
Cos(31) = x / 17
17*cos(31) = x
14.5718 = x
there is your answer, understand how I got it? :)