Solve the rational inequality. Express the solution using interval notation.
? 
A. (-?, -9] ? (0, 8] ? (72, ?)
B. (-?, -9) ? (0, 8) ? (72, ?)
C. (-?, -9] ? [72, ?)
D. (-?, -8] ? (0, 8] ? (72, ?)
Answer: A
Mathematics
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Find cot t.
A. - 
B. - 
C. 
D. 
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