Question # 1

In any triangle ABC, law of sines is:

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tan(π + tan^-1x ) =

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x

π+x

π-x

none of these

If sin α = cos ß in any triangle ABC then:

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α + ß = 90°

α + ß = 180°

α + ß = 360°

α + ß

The multiplicative identity of real numbers is:

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0

1

2

-1

2 sin α cos ß =

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sin (α + ß) - sin (α - ß)

cos (α + ß) + cos (α - ß)

sin (α + ß) + sin (α - ß)

cos (α + ß) - cos (α - ß)

In a triangle if α > 45°, ß > 30° then Γ cannot be:

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90°

100°

120°

10°

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x = 0

y = 0

x = 0 and y = 0

x = 0 or y = 0

If a_n = (n + 1) a_n-1, a₁ = 1, second term of the sequence is:

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3

1

2

4

The additive inverse of a matrix A is:

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A

A^-1

- A

A²

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20

The domain of principal tangent function is:

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Which of the following is correct:

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2 + 7i > 10 + i

1 + i > 1 - i

4 + 3i > 1 + 3i

none of these

If 2s = a + b +c, then in any triangle ABC:

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none of these

The range of principal tangent function is:

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The period of sec x is:

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equal sets

null sets

overlapping sets

subsets

If the matrices A & B have the orders 2×3 and 5×2 then order BA is:

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3×5

5×2

2×2

none

Inverse sine function is written as:

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(sin x)^-1

sin x^-1

arc sinx

arc sin^-1 x

Probability of a certain event is:

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0

1

>1

∞

2 sin 12° sin 46° =

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cos 34° + cos 58°

sin 34° - sin 58°

sin 34° + sin 58°

cos 34° - cos 58°

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