The triangle is attached
The value of the missing side is 22.7 units
How to find the missing side
The value of the missing side is worked using SOH CAH TOA
Sin = opposite / hypotenuse - SOH
Cos = adjacent / hypotenuse - CAH
Tan = opposite / adjacent - TOA
The missing side is calculated using sin, SOH
sin 35 = 13 / x
x = 13 / sin 35
x = 22.665
x = 22.7 units