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Mathematics ECAT Pre Engineering Chapter 15 Inverse Trigonometric Functions Online Test MCQs With Answers
Question # 1
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Question # 2
Tan
-1
1/x = ______
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sin x
sec
-1
X
cot
-1
X
None of these
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Question # 3
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1/3
1
3
None of these
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Question # 4
The value of sin
-1
5/13 is equal to
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Cos 5/13
Tan
-1
5/12
cos
-1
5/12
2 cos
-1
4/5
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Question # 5
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Question # 6
If tan
-1
3 + tan
-1
x = tan
-1
8, then x=
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5
1/5
5/14
14/5
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Question # 7
What is the value of cos (cos-1 2) ?
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√2
1/2
undefine
0
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Question # 8
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20
10
0
None of these
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Question # 9
The domain of the principle cos function is
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Question # 10
Ifπ≤x≤2π, then cos-1 (cos x)=
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cos x
-x
1/x
-x
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Question # 11
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Question # 12
The principal value of sin-1√(3/2) is
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-π/3
π/3
2π/3
π/2
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Question # 13
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Question # 14
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Question # 15
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Question # 16
Cos-1(x)=
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cos x
x
tan-1(-x)
Sec-1 (1/x)
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Question # 17
If 2 tan
1
(cos x) = tan
-1
(cosec
2
x), then x is equal to
Choose an answer
π
/ 3
π
/ 2
π
/ 6
π
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Question # 18
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Question # 19
The exact degree value of the function sin-1( -√3/2) is
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70
ο
50
ο
90
ο
60
ο
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Question # 20
The range of the principle cos function is
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Question # 21
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Question # 22
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Question # 23
x = sin
-1
3, then the value of sin x is
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√(3/2)
3
Not possible
-1
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Question # 24
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1
7
4
None of these
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Question # 25
The range of the principle cot function is
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Question # 26
The principal value of sin
-1
[-√(√3) /2] is
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5π/3
-2π/3
-
π/3
π/3
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Question # 27
The value of cos(cos-1 1/2) is
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1/2
√3/2
-1/2
1/√2
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Question # 28
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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Question # 29
Cos
-1
12/13 =
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tan
-1
3/5
cot
-1
13/12
Sec
-1
13/12
sin
-1
5/13
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Question # 30
The number of triplets (x, y, z) satisfying sin
-1
x +cos
-1
y + sin
-1
z = 2
π
is
Choose an answer
0
2
1
Infinite
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Question # 31
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π / 3
π / 4
π / 2
π
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