1/(sin(x)+1) + 1/(sin(x)-1) This is where I've gone with it: Combine the fractions over a common denominator: (sin(x)-1 + sin(x) + 1 ) / sin^2(x)-1 2sin(x) / -cos^2(x) -2tan(x)sec(x) Not sure if that is correct.
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Looks good to me.
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