4. If a = b + c, then is it true that I a I = I b I + I c I? Justify your answer. 4. If a = b + c then is it true that I a I = I b I + I c I? Justify your answer. November 15, 2021 Category: Chapter 10 - Vector Algebra , Maths , NCERT Exemplar Class 12 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related