\(\int_{\frac{\pi}{4}}^{\frac{3\pi}{4}}\frac{1}{1+\cos x}dx=\)
Answer & explanation
Correct answer: option 2
\(\int_{\frac{\pi}{4}}^{\frac{3\pi}{4}}\frac{1}{1+\cos x}dx=\int_{\frac{\pi}{4}}^{\frac{3\pi}{4}}\frac{1-\cos x}{\sin^2xdx}\)
\(\int_{\frac{\pi}{4}}^{\frac{3\pi}{4}}\frac{1}{1+\cos x}dx=\)
Correct answer: option 2
\(\int_{\frac{\pi}{4}}^{\frac{3\pi}{4}}\frac{1}{1+\cos x}dx=\int_{\frac{\pi}{4}}^{\frac{3\pi}{4}}\frac{1-\cos x}{\sin^2xdx}\)