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OpenStudy (ilovepurple42043):
1. What is the domain of validity for csc theta=1/sin theta? A. All real numbers B. All real numbers except odd multiples of pi/2 C. All real numbers except even multiples of pi/2 D. All real numbers except multiples of pi
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OpenStudy (er.mohd.amir):
D since multiple of pi make sin is zero and csc infinity.
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