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Online Tests
ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
Cos-1(x)=
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cos x
x
tan-1(-x)
Sec-1 (1/x)
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Question # 2
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Question # 3
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Question # 4
The angle of depression of the point at a distance 70 meters from the foot of the tower from the top of the tower is 45
𝜊
.The height of the tower is
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37m
97m
101m
70m
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Question # 5
The 31 term of the A.P 5,2,-1.....is
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-82
82
85
-85
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Question # 6
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Question # 7
IfΔABC is right, law of cosine reduce to
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Law of sine
Law of tangent
Phthogorous theorem
Hero's formula
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Question # 8
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Question # 9
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Question # 10
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4(x
3
- 3x
2
)
3
+ c
3x
2
- 6x + c
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Question # 11
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Question # 12
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Question # 13
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K/6
2K
3K
6K
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Question # 14
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Question # 15
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Question # 16
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0.9
0.74
0.2016
None of these
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Question # 17
Sin 45° = ______
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Question # 18
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Question # 19
The differential equation representing the family of curves y = A cos (x + B), where A, B are parameters, is
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Question # 20
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Question # 21
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-2x cos x
2
-2x
2
sin x
2
-x
2
sin x
-2x
2
sin x
2
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Question # 22
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-10
10/7
-10/7
-7/10
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Question # 23
A tower subtends an angle
α
at 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 is
β
. The height of the tower is
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b cot
α
tan
β
b tan
α
tan
β
b tan
α
cot
β
None of these
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Question # 24
The symbol ______ shall be used both for equation and identity
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Question # 25
Ifπ≤x≤2π, then cos-1 (cos x)=
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cos x
-x
1/x
-x
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Question # 26
(A∩Bc)c= -------------------------
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Ac∪Bc
Ac∪B
Ac∩B
None of these
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Question # 27
Period of sin 3x is ______
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Question # 28
The transpose of a row matrix is a ______
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Zero matrix
Diagonal matrix
Column matrix
Row matrix
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Question # 29
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Question # 30
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1, 1/2, 0
1, 2, 1
1, 2, 3
1, 2, 0
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Question # 31
For an A.P common difference d
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Can be zero
May or may not zero
Cannot be zero
None of these
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