How do we integrate ln| 1 - cot x | 0-pi/4?

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  1. 1-cotx=1-(cosx/sinx)= 1 - ((1/2)(cot(x/2))) - ((1/2)(sec(x/2)))
    how to simplify this inside "ln"?

    can we substract them adding ln(loge) infront of them?

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  2. I think you're stuck. There's just no way to get things to just a product.

    According to wolframalpha, the integral is not elementary.

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