sin2(x) ∫ sin-1 (t) dt + 0
cos2(x) ∫ cos-1(t) dt 0 for all x.
sin2(x) ∫ sin-1 (t) dt + 0
cos2(x) ∫ cos-1(t) dt 0 for all x.
cos2(x) ∫ cos-1(t) dt 0 for all x.

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