Could somebody answer this question?

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.

Find cot x if sin x cot x csc x = √2