Why is integration of cosx + cos@ = sinx + xcos@ - Maths - Integrals

Question

Why is integration of cosx + cos@ = sinx + xcos@ ?

Kuldeep Verma · Accepted Answer

Dear student
<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_5d78d243a5b98%20jpg">
note here c and d are constant of integration regards