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NAT I Engineering Mathematics MCQs With Answers
Question # 1
Sin
-1
(-x) =
Choose an answer
Cos
-1
1/x
-Sin
-1
X
1/sin-1x
Sin
-1
1/x
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Question # 2
The principal value of sin
-1
[√3/2] is
Choose an answer
π/3
-π/3
2π/3
5π/3
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Question # 3
If f (x) = x/x
2
- 4 then which is not included in the domain of f(x)
Choose an answer
0
-2
1
4
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Question # 4
If 1 + Cos x = 0 then x =
Choose an answer
π +2n π
π + nπ
π - nπ
π/2
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Question # 5
The direction cosines of y-axis are
Choose an answer
1,0,0
0,1,0
0,0,1
1,1,1
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Question # 6
The axis of the parabola y
2
= 4ax is
Choose an answer
x =0
Y =0
X = y
X = -y
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Question # 7
The equation of the line with gradient 1 passing through the point (h,k) is
Choose an answer
Y = x+ k-h
Y = k/hx +1
Y = x + h -l
Ky = hx =1
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Question # 8
The magnitude of a vector can never be
Choose an answer
Zero
Negative
Positive
Absolute
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Question # 9
Domain of Cosecθ is
Choose an answer
is R but θ= nπ
is R but θ ≠ nπ
is R but θ ≠ 2nπ
is R but θ ≠ nπ/2
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Question # 10
In the figure angle A is =
Choose an answer
15
60
90
20
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Question # 11
Cos
-1
(-x) =_______.
Choose an answer
π +cos
-1
x
π -sin
-1
x
π +sin
-1
x
π -cos
-1
x
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