Determine the domain of the expression. Write the domain in interval notation.
A. (-3, ?)
B. (-?, 3) ? (3, ?)
C. (-?, 0) ? (3, ?)
D. (-?, 0) ? (0, ?)
Answer: D
Mathematics
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A. 
B. 
C. 
D. ln 
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Solve the problem.Going toward San Francisco a building with a vertical height of 175 feet is seen from a small boat. At a distance x feet from the building, the angle of elevation ? of the top of the building can be found from the equation x = 175 cot ?. Sketch x as a function of ?.
A. 
B. 
C. 
D. 
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