From the top of a tree 20 metres high, the angle of depression at a point on the opposite bank of a river is found to be 30° .Find the breadth of the river.

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks