Use a reference triangle in an appropriate quadrant to find the angle.cot-1 (-1)
A. - 
B. 
C. 
D. - 
Answer: A
Mathematics
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Express the area of the region bounded by the given line(s) and/or curve(s) as an iterated double integral.The curve 
and the lines 
and 
A. 
B. 
C. 
D. 
Mathematics
Decide if the number is rational or irrational.1.27252523...
A. Irrational B. Rational
Mathematics
Choose the graph that matches the function. f(x) = 1
A. 
B. 
C. 
D. 
Mathematics
Simplify.(3 - 7)2 ÷ (5 - 4)4
A. 8 B. -8 C. -16 D. 16
Mathematics