Integrate[Cos[t] Tan[t]^(2 n), {t, 0, z}] == (Sin[z]^(1 + 2 n)/(1 + 2 n)) Hypergeometric2F1[1/2 + n, n, 3/2 + n, Sin[z]^2] /; Element[n, Integers] && n >= 0

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2007-05-02