Plsss help will give a good amount of points, need done asap

Steve is scuba diving near his home in maui. at one point he is 100 feet below the surface. represent this number with a negative number. if he descends another 5 feet, what negative number will represents his.

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

What is not true about kl and mn? what is mn? (show )