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Match the conditions/expressions in Colu...

Match the conditions/expressions in Column I with values in Column II
`(sin 3 alpha)//cos2 alpha)` is
`{:(" Column I"," Column II"),("A. Positive","p."(13pi//48, 14pi//48)),("B. negative","q."(14pi//48, 18pi//48)),(,"r."(18pi//48, 23pi//48)),(,"s."(0, pi//2)):}`

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