# Answer to Question #21335 in Trigonometry for RAJA

Question #21335

integeration of tan(x)sec2(x)

Expert's answer

Integrate(tan(x)sex(x)dx)=integrate(sin(x)/cos(x)(1/cos(X)DX)=integrate(sin(x)/cos^2(x)dx)=integrate(cos^(-2)(x)dcos(x)=-cos^(-1)(x)+C

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