Without actually solving the equation, list all possible numbers that would have to be rejected if they appeared as potential solutions. Then give the domain using set notation.
+ 
= 
A. 15, 19; {x
15, 19}
B. none; (-?, ?)
C. 0; {x
0}
D. 15, 19, 11; {x
15, 19, 11}
Answer: C
Mathematics
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B. y = 
cos 
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cos 
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sin (2x + ?)
A. 
B. 
C. -?
D. - 
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What will be an ideal response?
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Solve, finding all solutions.cos x = -1 (Express your answer in degrees.)
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