Question # 1

n² - 1 divisible by 8 when n is

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an odd integer

an even integer

Irrational

Prime Number

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

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3

6

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45°

30°

75°

60°

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A

B

U

None of these

What is the conjugate of -7 -2i?

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-7 + 2i

7 + 2i

7 -2i

None of these

graph of sine function is bounded between lines

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y± 1 = 0

x± 1 = 0

x± y - 0

None of these

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A

A'

U

A A'

A tower subtends an angleαat a point on the same level as the root of the tower and at a second point, b meters above the first, the angle of depression of the foot of the tower isβ. The height of the tower is

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b cotαtanβ

b tanαtanβ

b tanαcotβ

None of these

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(a + b)c = a . c + bc

a + b = b + a

(a + b) + c = a + (b + c)

a(b+ c) = ab + ac

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Domain of cosec x is ______

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