Question # 1

If cos 20°=K and cos x=2 k²-1, then the possible values of x between 0° and 360° are

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140°

50° and 140°

50° and 130°

40° and 320°

When we expand (a + 2b)⁵then

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a⁵+ 10a⁴b + 40a³b²+ 80a²b³+ 80ab⁴+ 32b⁵

a⁵+ a⁴b + a³b²+ a²b³+ ab⁴+ b⁵

5a⁵+ 4a⁴b + 3a³b²+ 2a²b³+ 1 ab⁴+ b⁵

None

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2, 3

3, 3

2, 6

2, 4

The distance between the points (1, 2) and (2, 1) is

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3

6

The transport of a square matrix is a

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Row matrix

Column matrix

Square matrix

Null matrix

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x³

3x²

3x

3

The domain of the function y = sin x , is

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-π/2≤ x≤ π/2

π/ ≤ x≤ π

-2π ≤ x≤ 2π

-1 ≤ x≤ 1

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Associative property of addition

Associative property of multiplication

Commutative property of addition

Commutative property of multiplication

The radius of the circle 2x²+ 2y²- 4x + 12 y+11=0 is:

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√4.5

√11

√29

√15

The position vector of a point (x, y) in xy plane is

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none of these

(1+w)(1+w2)(1+w4)(1+w8)....50 factors

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0

-1

1

2

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