So, we can talk about sinxcosx so that, value will be also 0, and here the reasoning is very clear that the cos is the even function here, sin is the odd function and when we integrate it from -π to π, this integrand is odd, so the value is 0 irrespective of whatever n or m is.
எனவே நாம் sinx cosx ஆகியவற்றைப் பற்றி பேசலாம் இதன் மதிப்பும் பூஜ்ஜியம்.