SOLUTION: verify that Cosx (secx+cosx csc^2x) = csc^2
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Question 281968
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verify that Cosx (secx+cosx csc^2x) = csc^2
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verify that Cosx (secx+cosx csc^2x) = csc^2
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Cosx (secx+cosx csc^2x)
Multiply thru by cos, see what you get.
Change sec to 1/cos, and csc to 1/sine.