If `|veca+vecb|=|vecas-vecb|, (veca,vecb!=vec0)` show that the vectors `veca and vecb` are perpendicular to each other.

If |veca+vecb|=|veca-vecb|, (veca,vecb!=vec0) show that the vectors veca and vecb are perpendicular to each other.

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

If veca=hati+2hatj-3hatk and vecb=3hati+hatj+2hatk show that the vectors veca+vecb and veca-vecb are perpendicular to other.

If veca and vecb are two unit vectors such that veca+2vecb and 5veca-4vecb are perpendicular to each other, then the angle between veca and vecb is

If veca and vecb are unit vectors such that 2veca-4vecb and 10veca+8vecb are perpendicular to each other, then find the angle between these two vectors.

If |veca|=|vecb| , then (veca+vecb).(veca-vecb) is equal to

If veca=5hati-hatj-3hatk and vecb=hati+3hatj-5hatk , then show that the vectors veca+vecb and veca-vecb are perpendicular.

If veca , vecb are unit vectors such that the vector veca + 3vecb is peependicular to 7 veca - vecb and veca -4vecb is prependicular to 7 veca -2vecb then the angle between veca and vecb is

The vector (veca.vecb)vecc-(veca.vecc)vecb is perpendicular to

If veca +vecb +vecc =vec0, |veca| =3 , |vecb|=5 and |vecc| =7 , then the angle between veca and vecb is