Area

=fxSinxcosx btw 0 to2π


@ashishdeosingh but there is a minus sign btw sin and cos .Please solve it to satisfy me in mode type question

@pratimejaiswal Please request you to solve it bz it is a jeee asked questions

now do the the integration.

@ashishdeosingh l do not understand . please sove it and state how it's graph formed

Just observe graph of sinx and cosx like in 0π/4 cosx is greater than sinx so mod will open with negative sign similarly check further and solve.