[" If in a triangle "ABC],[bar(BC)=(bar(u))/(|bar(u)|)-(bar(v))/(|bar(v)|)" and "],[bar(AC)=(2bar(u))/(|bar(u)|)" where "|bar(u)|!=|bar(v)|" then "]

In triangle ABC if bar(AC) =u/(|bar u|)-v/(|bar v|) and bar(AC)=(2bar u)/(|baru|) where |bar u| != |bar |v| then

In triangle ABC if bar(AB) =u/(|bar u|)-v/(|bar v|) and bar(AC)=(2bar u)/(|baru|) where |bar u| != |bar |v| then

If bar(mu)=bar(a)-bar(b),bar(v)=bar(a)+bar(b),|bar(a)|=|bar(b)|=2 then |bar(mu)xx bar(v)|=……..

If bar(u)=bar(a)+bar(b),bar(v)=bar(a)-bar(b),|bar(a)|=|bar(b)|=2 then |bar(u)xxbar(v)|=

The point of intersection of bar(r)=bar(a)+s((bar(b)+bar(c))/(2)-bar(a)),bar(r)=bar(b)+t((bar(c)+bar(a))/(2)-bar(b)) where bar(a),bar(b),bar(c) ,are position vectors of the vertices of a triangle

(bar(a)+2bar(b)-bar(c))*(bar(a)-bar(b))xx(bar(a)-bar(bar(c)))=

If (bar(a)+bar(b))*(bar(a)+bar(b))=|bar(a)|^(2)+|bar(b)|^(2),bar(a)!=0,bar(b)!=0 , then