rref() with symbolic variables (6x54 matrix)

Hello, I want to generate a row-reduced echolon form of a matrix. However, it is 6x54 and there almost 60 symbolic variables. I try to get result with rref(), but matrix is very complicated. I wait almost one whole night, however, It results with a failure. How can I compute rref of a matrix if it is sybolic? By the way, there are sin, cos terms in the matrix. I know it is very hard to calculate but I need to generate. If you know any method to simplify, I will be happy.

Thank you for your helps.

[Kavya Vuriti]

Could you tell what error are you getting and also give code which is causing error.