What is the integral from 0 to pi/3 of ln(sec(x)) ?

The integral from 0 to pi/3 of ln(sec(x)) is 0.21839…

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integral from 0 to pi/3 of ln(sec(x))

\int_{0}^{\frac{π}{3}} ln (sec (x)) d x

0.21839 \dots

Solution steps

\int_{0}^{\frac{π}{3}} ln (sec (x)) d x

Evaluating using numerical calculation methods

= 0.21839 \dots

\frac{d}{d x} (\frac{e ^{x}}{8 + e ^{x}})

\int - 14 x^{- 4} y^{6} + 16 x^{- 5} y^{7} d y

\int \frac{x ^{2} + 2 x y - y ^{2}}{( x + y ) ^{2}} d x

y^{^{''}} - 14 y^{^{'}} + 51 y = 0

x y^{^{'}} + y = - 8 x y^{2}, y (1) = 1

What is the integral from 0 to pi/3 of ln(sec(x)) ?
The integral from 0 to pi/3 of ln(sec(x)) is 0.21839…