Trust is based on reasonable expectations. If I say 'I trust that the sun wise rise tomorrow', I have the knowledge of knowing that every single time the sun has set it has risen the next day, plus a basic understanding of the theory behind how the orbit of sun works.
It's not same as blind faith. If I were to roll a regular die and say 'I have faith that the number 5 will appear', we know that the odds are equally as likely that 1,2,3,4 or 6 will show, giving me no reason to think that it's any more likely 5 will appear. It's wishful thinking.
Those are probably not the best examples but hopefully you get the point.