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How do I compute the integral $$\int_0^{\pi/2} \cfrac 1 {12\cos x + 9 \sin x} dx?$$

Please can you help.

  • 0
    This isn't something you can break up into partial fractions (unless you can pull some chicanery that I'm not seeing).2012-10-25
  • 1
    It can be done with partial fractions. See my answer below.2012-10-25

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