Exam 5: Trigonometric Functions of Real Numbers
Exam 1: Functions and Their Graphs137 Questions
Exam 2: Polynomial and Rational Functions141 Questions
Exam 3: Exponential and Logarithmic Functions137 Questions
Exam 4: Trigonometric Functions of Angles261 Questions
Exam 5: Trigonometric Functions of Real Numbers151 Questions
Exam 6: Analytic Trigonometry267 Questions
Exam 7: Vectors, the Complex Plane, and Polar Coordinates225 Questions
Exam 8: Systems of Linear Equations and Inequalities181 Questions
Exam 9: Conics, Systems of Nonlinear Equations and Inequalities, and Parametric Equations230 Questions
Exam 10: Sequences and Series124 Questions
Exam 11: Limits: A Preview to Calculus122 Questions
Exam 12: Review: Equations and Inequalities244 Questions
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Body Temperature. The human body temperature normally fluctuates during the day. If a person's body temperature can be modeled by the formula T = 99.1 - 0.5sin
where x is the number of hours since midnight and T is in degrees Fahrenheit, then what is a person's temperature at 11:00 pm? Round your answer to two decimal places.

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Use the unit circle to find all the exact values of θ that make cotθ =
in the interval



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Match the graph of the cosine function to the equation over
)



(Multiple Choice)
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Find the exact value of sec
using the unit circle. Rationalize the denominator, if necessary.

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State the amplitude, period, and phase shift of the function. 

(Multiple Choice)
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A weight hanging on a spring will oscillate up and down about its equilibrium position after it's pulled down and released. This is an example of simple harmonic motion. This motion would continue forever if there wasn't any friction or air resistance. Simple harmonic motion can be described with the function
where A is the amplitude, t is the time in seconds, m is the mass and k is a constant particular to that spring. If a spring is measured in centimeters and the weight in grams, then what are the amplitude and mass if
Amplitude: _____cm.
Mass: ______ g.


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State the amplitude, period, and phase shift of the function.
y =
Amplitude = ________
Period = __________
Phase Shift = _________

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A lighthouse is located on a small island 3 miles offshore. If the length of light beam is determined by y = 3|sec t | miles. Find the length of the beam at t =
. Round to nearest tenth of a mile.

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Match the graph of the cosine function to the equation over



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Atmospheric Temperature. The average daily temperature in Peoria, Illinois, can be approximated by the equation
where x is the number of days since December 31 of the previous year (Ex: January 1, x = 1; Mar 1, x = 60), and T is in degrees Fahrenheit. What is the expected temperature on June 7th, assuming it is not a leap year? Round your answer to one decimal place.

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Graph the function
over the interval [-1.3, 1.3] where 0.7 is the period of the function.
![Graph the function over the interval [-1.3, 1.3] where 0.7 is the period of the function.](https://storage.examlex.com/TB10663/11eed1b2_5782_d54e_a8a5_5bd1839cb775_TB10663_00.jpg)
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