Verify the identity. show your work. cot^2x + csc^2x = 2csc^2x - 1

Explain how you can use the associative property to evaluate (7x50)x4.

Icould really use some with this question.

What is the percentile for data value 6 in the following data set? 4 13 8 6 4 4 13 6 4 13 2 13 15 5 9 4 12 8 6 13 40 25 35 62