Which double-angle or half-angle identity would you use to verify the following: cscxsecx=2csc2x a) cos2x=1-sin^2x b)sin2x=2sinxcosx c)tan2x=(2tanx)/(1-tan^2x) d)cos2x=2cos^2x-1

Which statement about the graph of y = 8(0.25)^2

Alonso walked with his friend andy one day, and wanted to compare their speeds. alonso walked 3 miles in one hour, and andy walked 2 miles in 2 hours. complete the table to graph the relationship for each person.

Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected