
Parviz F. answered 12/31/13
Tutor
4.8
(4)
Mathematics professor at Community Colleges
( CSC X + 1 ) ( CSC -1) =
CSC^2 X -1 =
1 + Cot^2 X - 1 =
Cot^2 X
Serenity E.
asked 12/31/13Parviz F. answered 12/31/13
Mathematics professor at Community Colleges
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