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Mathematical Investigations IVb.
Name:
Practice Trigonometry Exam
An Opportunity to Demonstrate Knowledge: Part I – With Calculator
Instructions: Answers without work will receive little or no credit. You may use your calculator, but
you must show sufficient work on all problems so that I can reproduce your results. If any problem
has multiple solutions, be sure you clearly indicate which values go together.
[3 pts]
1.
Find all possible values of angle F in DEF . Round final answers to one decimal place.
e = 11.5
d = 14.0
mF 
[4 pts]
2.
A garden is in the shape of an obtuse triangle. One of the sides of the garden is 35 feet long, and
the angle opposite this side is 50 . The longest side is 40 feet. Draw a well-labeled diagram and
determine the area of the garden.
[3 pts]
3.
In a triangle ABC , b = 15.7 and c = 21.2. Find a possible degree measure for the angle ABC
that would allow for two possible triangles. Explain your solution.
Trig Test (Calculator) page 1
Rev. F11
[4 pts]
[4 pts]
4.
A regular pentagon is inscribed in a circle with radius 36 cm. Determine the perimeter of the
pentagon (nearest tenth).
2cos2 (x)  3sin(x)  3
5
Solve:
a.
For all x in Radians
[2 pts]
b.
Trig Test (Calculator) page 1
For   x  
Rev. F11