Question # 1

In the triangle Δ ABC, where C is the right angle Tan A + Tan B=

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A +B

C² /AB

A²/BC

B²/AC

120° degrees are equal to how many radians?

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π/3 radians

2π/3 radians

π/4 radians

π/2 radians

Complex roots of real quadratic equation occur in

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Nilpotent matrix

Singular matrix

Non singular matrix

Diagonal matrix

The conic is a parabola if

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e <1

e > 1

e = 1

e = 0

If ab > 0 and a < 0, which of the following is negative?

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b

-b

-a

(a - b)²

1+2+3+......+n=?

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n(n +1)/2

n +1/2

n(n +1)(2n +1)/6

n³

If Cosα = 3/5, Cosβ = 5/13, then

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Cos(α +β) =33/65

Sin(α +β) =56/65

sin²(α +β/2) =1/65

Cos(α +β) =63/65

If x² +y² = 4, Then dy/dx =

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2x +2y

4 -x²

-x/y

y/x

P(x) = 2x⁴ -3x³ +2x-1 is polynomial of degree

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1

2

3

4

In the function v = 4/3 π r³, V is a function of

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3/4

r

v

π

If P(E) is the probability that can event will occur then P(E)=

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1

0.5

2

0

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