Help pleaseee

I have to factor the expression and use fundamental identities: sins^2xcscx^2-sin^2x sec^4x-tan^4x

Read the quote from Martin Luther’s 95 Theses. “It is certain that when the penny jingles into the money-box, gain and avarice [greed] can be increased, but the result of the intercession [prayer on behalf of another person] of the Church is in the power...