Question 1/6 A water tower is located 410 feet from a building. From a window in the building, it is observed that the angle of elevation to
the top of the tower is 42 degrees and the angle of depression to the bottom of the tower is 25 degrees. Approximately how
tall is the water tower?

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.