Saved Bookmarks
| 1. |
Plz explain this ques |
|
Answer» This MEANS |a+b|=|a-b| means if we SQUARE both SIDE THEB a2+b2+2abcostheta =a2+b2-2abcotheta or 4abcostheta=0 or costheta=0or theta=90 DEGREE |
|