Question # 1

By expressing sin 125° in terms of trigonometrical ratios, answer will be

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sin 65° = 0.9128

sin 55° = 0.8192

sin 70° = 0.5384

sin 72° = 0.1982

120° degrees are equal to how many radians?

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{x : xε Z and x < 1} is

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Singleton set

A set with two points

Empty set

None of these

What is the number of elements of the power set of {0, 1}

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1

2

3

4

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1

5

7

9

If S and P are the sum and the product of roots of a quadratic equation, then the quadratic equation is

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x²+ Sx - P = 0

x²- Sx + P = 0

x²- Sx - P = 0

X²+ Sx + P = 0

The range of the principle cos function is

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A sequence of number whose reciprocals form an arithmetic sequence is called

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Geometric sequence

Arithmetic series

Harmonic sequence

Harmonic series

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The point where the axis meets the parabola is called

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Directrix

Foucu

Chord

Vertix

The middle term of [1/x-x]¹⁰is

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-152

-252

371

-421

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