The heights of 10 mountains were recorded to the nearest 10 m and are shown in the table below. Please provide an explanation for each step.

What basic trigonometric identity would you use to verify that sin x cos x tan x =1-cos^(2)x?

Brian, chris, and damien took a math test that had 20 questions. the number of questions brian got right is 14 more than the number of questions chris got right. damien correctly answered 2 less than the number of questions chris answered correctly. if brian and damien have the same score, which statement is true?

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.