In a triangle ABC prove this "": - Maths - Relations and Functions

Question

In a triangle ABC prove this "":

Kuldeep Verma · Accepted Answer

Dear student
<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_5dd4311e52b3d%20jpg"
style="width: 857px; height: 1022px;"> regards