सिद्ध कीजिए कि: `A-B=AnnB’=B’-A’`

सिद्ध कीजिए कि 2tan^(-1)sqrt((b)/(a))=cos^(-1)((a-b)/(a+b))

सिद्ध कीजिए कि |vecA xx vecB|^(2) + |vecA * vecB|^(2) = (AB)^(2).

यदि triangleABC में (If इन triangleABC), a = (1)/(sqrt(6)-sqrt(2)), b = (1)/(sqrt(6)+sqrt(2)), C = 60^(@) तो सिद्ध कीजिए कि (Prove that) c = (sqrt(4))/(2) .

Which of the following statement is false: A-B=AnnB b. A-B=A-(AnnB) c. A-B=(AuuB)-B d. A-B=A-B '

Consider the following for any three non-empty sets, A, B and C. 1. A-(BuuC)=(A-B)uu(A-C) 2. A-B=A-(AnnB) 3.A=(AnnB)uu(A-B) Which of the above is/are correct ?

Prove that A-B=AnnB^(c ) .