use soh cah toa!
Step-by-step explanation:
soh= sin opposite/hypotenuse
sin (65°) 5/x
* x *x
x* (sin 65°)= 5
x (0.906308) =5
÷0.906308 = ÷0.906308
x≈ 5.51689
x≈ 5.5