Question # 1

cos⁴θ- sin⁴θ=

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cos4θ

cos2θ

-sinθ

sin2θ

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Diagonal matrix

Scalar matrix

Triangular matrix

Identity matrix

A chimney is such that on walking towards it 50 m in a horizontal line through its base the angular elevation of its top changes from 30° to 45°. The height of the chimney is

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64.A point (x, y, z) moves parallel to xy plane. Which of the three variables x, y, z remain fixed?

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z

x

y

x and y

The law of sines is

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If Z₁ = 1+ i, Z₂ = 2+3i , then |Z₁ -Z₂| =?

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√5

√7

-1-2i

√3

If a, b, c are in AP., a, b, c are in G.P. then A, m²b, c are in

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A.P.

G.P.

H.P.

None of these

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2

-3/2

1

0

f(x) = sin x is:

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an odd function

an even function

an implicit function

an exponential function

The conic is a parabola if

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e < 1

e > 1

e = 1

None of these

ⁿC₂= exists when n is ______

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Mathematics General Science Test Medium Mode MCQs With Answers

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