Is 1087.5 larger than 2,175

What basic trigonometric identity would you use to verify that csc x sec x cot x = csc^(2)x

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9

Can you me with this question? i'll reward *30 points i just need with this one question so that i could solve the others. * edit: i originally set up the question to reward 30 points, but for some reason i can only reward 15. if you don't get 30, then i'm sorry. i'm still kind of new to this site