Sin x/cos x + cos x/sin x over a common denominator =(sin x)^2 + (cos x)^2/(sin x)(cos x) using the Pythagorean identity =1/(sin x)(cos x) and definitions = csc x * sec x.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.