यदि `|veca + vecb| = |veca|` तो सिद्ध कीजिए की सदिश `2veca + vecb "सदिश" vecb ` पर लम्ब होगा |

|veca| = |vecb| = veca = vecb .

If 2veca*vecb = |veca| * |vecb| then the angle between veca & vecb is

सिद्ध कीजिए कि |vecA xx vecB|^(2) + |vecA * vecB|^(2) = (AB)^(2).

Given two vectors veca and vecb with | veca| and |vecb| =3 and (veca .vecb) =4 find |veca + vecb| and |veca - vecb| .

|veca pm vecb|^2 = |veca|^2 + |vecb|^2 pm 2|veca||vecb|cos theta and (veca + vecb).(veca - vecb) = |veca|^2 - |vecb|^2

Find |vecb| if ( veca +vecb) .( veca - vecb) =8 and |veca|= 8|vecb|

If 2(veca.vecb)= |veca||vecb| then angle between veca and vecb equals to ,

If veca and vecb are non - zero vectors such that |veca + vecb| = |veca - 2vecb| then

If veca and vecb are non - zero vectors such that |veca + vecb| = |veca - 2vecb| then

If veca and vecb are non - zero vectors such that |veca + vecb| = |veca - 2vecb| then