Definite integral

[Aashna]

Which property are we referring to here?

[onionknight]

No clue but here's how I'd do it.

-> 0∫π/2 log (4+3sinx)dx - 0∫π/2 log (4+3cosx)dx

Now set y=90-x
 Dy=-Dx

->    0∫π/2 log (4+3sinx)dx – π/2∫0 log (4+3siny)dy
->    0