If `0^@ < theta , phi<90^@` and `tantheta = 1/7, sinphi = 1/sqrt(10)` then:

If A = [{:( 0,0,0),(0,0,0) ,(0,1,0):}] ,then A is

If A=[(0,0,0,0),(0,0,0,0),(1,0,0,0),(0,1,0,0)] then (A) A^2=I (B) A^2=0 (C) A^3=0 (D) none of these

If A=[(0,0,0,0),(0,0,0,0),(1,0,0,0),(0,1,0,0)] then (A) A^2=I (B) A^2=0 (C) A^3=0 (D) none of these

If A = [{:( 0,0,0),( 1,0,0),(0,1,0):}] ,then

If A =[{:(2,0,0),(0,3,0),(0,0,5):}] , prove that, A^(2)=[{:(2^(2),0,0),(0,3^(2),0),(0,0,5^(2)):}] , hence by induction method show that, A^(n)=[{:(2^(n),0,0),(0,3^(n),0),(0,0,5^(n)):}]

If P = [(x,0,0),(0,y,0),(0,0,z)]and Q = [(a,0,0),(0,b,0),(0,0,c)] , verify that PQ = QP = [(xa, 0,0),(0,yb,0),(0,0,zc)]

If the matric A=((2,0,0),(0,2,0),(2,0,2)) , then A^(n)=((a,0,0),(0,a,0),(b,0,a)), n in N where

If A = [(3,0,0),(0,3,0),(0,0,3)] , then |A||adj A| =...