Here is given solid angle concept is it in syllabus of jee and is it required to study or it is time waste ?
It is used in many questions of jee to short the answers. It helps a lot.
Bro our sir taught this by using this u can save 3-4 pages of integration
If your are aiming for mains then u can leave it because it has hardly any use in mains level problem (exception exist) . But for advanced you can't
It simplifies many questions , and it is hardly a 15 min topic , so I don’t see a point in leaving it .
Ok thank you