4+5(p-1)=34

I: If A=[(1,2),(3,4)] then A^(-1)=[(4,-2),(-3,1)] II: If A=[(3,4),(2,1)] then A^(-1)=1/5[(-1,4),(2,-3)]

If A^(-1)=(1)/(11)((3,4),(5,3)) , then A =

If A=[(3,-3,4),(2,-3,4),(0,-1,1)] , then A^(-1)=

If A=[(3,-3,4),(2,-3,4),(0,-1,1)] , then A^(-1)=

If B-A^(T)={:[(3,4,-2),(5,-3,7)]:}andB^(T)+A={:[(2,0),(5,-1),(3,4)]:} , then find Matrix A.

The distance between P(1,-3,4) and Q(-4,1,2) is

P.T. Cos^(-1)((4)/(5))+Sin^(-1)((3)/(sqrt34))=Tan^(-1)((27)/(11)) .

Find the equation of the set of the points P such that is distances from the points A(3,4,-5) and B(-1,2,4) are equal.

Find the area of the triangle PQR whose vertices are,P(2,1),Q(3,4) and R(5,2).