Write the expression in terms of its cofunction.sec 
A. sec 
B. csc 
C. cos 
D. sin 
Answer: B
Mathematics
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A. Yes B. No
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A. opens up B. opens down
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A. (-?,-7) or (0, 4) B. (-7, 0) or (4, ?) C. (-7, ?) D. (-4, 0) or (7, ?)
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