1. How do I find the length of an arc in a circle of radius 10 centimeters subtended by the central angle of
2. How do I graph f(x) =x sin x on [-4π, 4π] and verbalize how the graph varies from the graphs of f(x)= +x.
3. How do I graph f(x) = sin x/x on the window [−5π, 5π] and describe freely what the graph shows.
4. A 23-ft ladder leans against a building so that the angle between the ground and the ladder is 80°. How high does the ladder reach up the side of the building?