Question

how to find that three vectors are mutually perpendicular​

Answer 1

Answer:

If a,b,c are three mutually perpendicular vectors of equal magnitude, then the angle θ which a+b+c makes with any one of three given vectors, is given by. If →a, →b, →c are three mutually perpendicular vectors of equal magniltgude, prove that →a+→b+→c is equally inclined with vectors →a, →b, and →⋅ also find the angle.