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MBA IT, Mater in Science and Technology
Devry
Jul-1996 - Jul-2000
Professor
Devry University
Mar-2010 - Oct-2016
Please I need help doing my math homework due 09/02/16.
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Quiz 2 SHOW ALL WORK to receive credit. 1. 3 pts. Use the sum or difference identities to evaluate exactly (no decimal approximations):
cos285° 2. In questions 2A, 2B, 2C, and 2D below, find the exact values using the given information: sin
α = -5/12 with α between π and 3π/2
cos β = 2/5 with β between 3π/2 and 2π
3 pts. 2A. Find sin(α - β) 3 pts. 2B. Find tan(2β) 3 pts. 2C. Find cos(α/2) 2 pts. 2D. Find sec(π/2 - α) Problems 3 to 5: 1 pt. each. Find the values exactly.
3. arccos (-1/2) 4. arcsin (-1) 5. arccot (√3/3) 6. 2 pts. Find this value exactly: arccos [sin(11π/6)] � 7. 7 pts. For the function � = 2cos[ � + 4 (2 pts.) Graph at least one period of the function.
(3 pts.) Find the amplitude, period, and phase shift.
(2 pts.) Also find two different ordered pairs on the graph of the function, the first point when x is 0, and
the second point when y is -2.
The amplitude is __________ The period is ___________ The phase shift is ________ Two points on the graph are: (0, ____) and (___, -2). 8. 4 pts. Solve, finding all solutions in the interval
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