Write an algebraic expression in .

From a distance of 45 feet from the base of a tree, the angle of elevation to the top of the tree is

Write the equation for a sine curve with a period of , an amplitude of 4, and a vertical translation up 5 units. Equation: 

Evaluate the function giving the exact value.  The answer must be in fraction form and simplified radical form.  Decimal approximations will be marked incorrect.

 A research vessel detects an object on the sea floor that is 6500 feet diagonally from the vessel.  The angle of depression between the water surface and the object is .  How deep (vertical depth) is the object?  Round your answer to 2 decimal places. Show your diagram, equation(s) and work on the paper you will submit at the end of the test. The depth of the object is feet.

Write an equation using the cosine function that models the graph below.

*C) expansion of cytosine-guanine-guanine (CGG) repeats 200.

Find the following information about the graph.  You do not need to draw the actual graph.  Write pi for

*D) Failure to treat properly results in progressive mental retardation.

10. A metastatic tumor is one that: