Show :
`overline( z .w ) = overline(z ) . overline(w )`
Complex number property is given

overline(PQ)-overline(TQ)+overline(PS)+overline(ST)=

overline(AB)-overline(CB)+overline(DA)+2overline(CD)=

[[overline(a), overline(b), overline(a)timesoverline(b)]]=

overline(OA)+6overline(BC)+overline(AB)+5overline(OB)=

Show that arg. overline(z)=2pi-arg.z.

Let the vectors overline(u), overline(v), overline(w) be coplanar, , then overline(u)*(overline(v)timesoverline(w)) =

If overline(a),overline(b), overline(c) are three non-coplanar vectors and overline(p), overline(q), overline(r) are vectors defined by the relations overline(p)=(overline(b)timesoverline(c))/([[overline(a), overline(b), overline(c)]]), overline(q)=(overline(c)timesoverline(a))/([[overline(a), overline(b), overline(c)]]), overline(r)=(overline(a)timesoverline(b))/([[overline(a), overline(b), overline(c)]]) , then (overline(a)+overline(b))*overline(p)+(overline(b)+overline(c))*overline(q)+(overline(c)+overline(a))*overline(r)=

For vectors overline(a) and overline(b) and overline(a)+overline(b)ne=0 and overline(c) is a non-zero vector, then (overline(a)+overline(b))times(overline(c)-(overline(a)+overline(b)))=

If overline(a), overline(b) and overline(c) are unit vectors perpendicular to each other, the [[overline(a), overline(b), overline(c)]]^(2)=