Derivative of arcsin(cos(2x))
is this chain rule?

Apossible explanation for a set of facts that can be tested by further investigation is called

Which lists the organs in the correct order as food passes from the mouth to anus?

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination. at the turning point, how far is the second student from the destination?