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AP EAMCET · Maths · Definite Integration

\(\int_0^{\pi / 2} \log |\tan x+\cot x| d x=\)

  1. A \(\pi \log 2\)
  2. B \(-\pi \log 2\)
  3. C \(\frac{\pi}{2} \log 2\)
  4. D \(2\pi \log 2\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(\pi \log 2\)

Step-by-step Solution

Detailed explanation

\(\int_0^{\pi / 2} \log |\tan x+\cot x| d x = \int_0^{\pi / 2} \log \left(\frac{1}{\sin x \cos x}\right) d x = \int_0^{\pi / 2} \log \left(\frac{2}{\sin 2x}\right) d x\) \(= \int_0^{\pi / 2} \log 2 d x - \int_0^{\pi / 2} \log (\sin 2x) d x\)…