Please help with this

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

How many square feet of out door carpet will we need for this hole? 8ft 3ft 12ft 4ft

State whether weight is a function of height for the six students and explain. a. yes, height is a function of weight because two students weigh 165 pounds but have different heights. b. no, height is not a function of weight because two students weigh 165 pounds but have different heights. c. yes, weight is a function of height because for each value of height there is one corresponding value of weight. d. no, weight is not a function of height because there is not enough data to determine a function.