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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 mF [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