Solve.3.3x3 - 13.2x > 19.8x2 - 79.2
A. (-2, 2) ? (6, ?)
B. (-?, -2) ? (2, 6)
C. (-?, -6) ? (2, 6)
D. (-6, 2) ? (6, ?)
Answer: A
Mathematics
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A. 
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. y = 3csc x, y = 3
, 
? x ? 
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Find cos(A - B).cos A = - 
and cos B = 
, where 
and 
.
A. - 
B. 
C. 
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