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A-B =phi iff...

A-B =`phi` iff

A

a)`A!=B`

B

b)`AsubB`

C

c)`BsubA`

D

d)`AcapB=phi`

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Knowledge Check

  • For any two numbers theta and phi , we define theta R phi if and only if sec^(2) theta - tan ^(2) phi =1 the relation R is -

    A
    Reflexive but not transitive
    B
    symmetric but not reflexive
    C
    Both reflexive and symmetric but not transitive
    D
    an Equivalence relation

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