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OpenStudy (anonymous):
Verify the basic identity. What is the domain of validity? (cotx) = (cosx)(cscx)
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OpenStudy (p0sitr0n):
cotx = cosx/sinx cscsx = 1/sinx cosx x cscx = cosx/sinx =cotx domain is real except for cscx=0
OpenStudy (anonymous):
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