Question # 1

If A and B are matrices such that AB=BA=I then

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A and B are multiplicative inverse of each other

A and B are additive inverses of each other

A and B are singular matrices

A and B are equal

Sin 720° = ________

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1

0

2

1/2

The area of circle of unit radius=

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0

1

4

π

Ab > 0 and a > 0 then

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a > b

a < b

a = b

None

The multiplicative inverse of x such that x = 0 is

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-x

does not exist

1/x

0

The mid point of the line joining (=1,-3) to(3,-5) is

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(1, 1)

(1,-1)

(2, -8)

(1, -4)

The set of complex numbers forms a group under the binary operation of

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0

±1

1

{0,1}

Sin^-1 x =?

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π/2- Sin^-1 x

π/2 -Cos^-1 x

-Sin^-1 x

-Cos^-1 x

If 2 Sin x Cos 2 x = Sin x then?

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X = nπ+ π/6

X = nπ +π/3

X = nπ +1

X = nπ + π/2

The set (Z, +) forms a group

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Function on B

Range

Domain

A into B

Which of the following is the solution of Cot²x = 1/√3

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π/5

π/3

π/7

π/9

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