If `|veca + vecb| = |veca - vecb|`, then

If |veca + vecb | =|veca - vecb | then show that veca and vecb are perpendicular .

If |veca - vecb|=|veca| =|vecb|=1 , then the angle between veca and vecb , is

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

If |veca| = |vecb| = |veca + vecb| = 1 , then the value of |veca - vecb| is equal to

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

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

If |veca+vecb|=|veca-vecb| show that veca_|_vecb .

If |veca+vecb|=|veca-vecb| show that veca_|_vecb .

If |veca|=3, |vecb|=1 and |veca+vecb|=|veca-vecb| , then |veca xx vecb| is: