Swansea have separated themselves from the relegation battle since the turn of the year.
"For us the most important thing is to stay in the Premier League. Sometimes we can take it for granted - maybe people expect us to finish in the top 10."
Swansea face Liverpool on Sunday and a win could see them jump as high as 11th in the table.
Rangel spoke of his excitement at the prospect of taking on Jürgen Klopp's men:
"It's in our hands. We have to look at Liverpool as an exciting game and try to get a better performance than in the last two games."
Francesco Guidolin arrived at the Liberty Stadium in January, and has overseen his side's improvement in form, picking up six vital victories along the way.
A win against the Reds on Sunday would mathematically ensure their survival, and Rangel thinks that is an achievement deserving of more praise:
"It's been hard for us and I think staying up this year will be a fantastic achievement considering what's happened."
Following Sunday's game against Liverpool, Swansea head to Upton Park to take on West Ham United, before they host Manchester City at the Liberty Stadium on the final day of the season.