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ECAT Mathematics Chapter 15 Inverse Trigonometric Functions Online Test MCQs With Answers
Question # 1
If tan
-1
3 + tan
-1
x = tan
-1
8, then x=
Choose an answer
5
1/5
5/14
14/5
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Question # 2
Sin-1(-x)=
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x
-x
-sin-1 x
cos-1 x
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Question # 3
Sin -1 x=
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sin(π/2-x)
Sin-1 (π/2-x)
π/2-cos-1x
π/2 + cos-1x
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Question # 4
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0
-1
1/2
1
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Question # 5
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 # 6
Sec
-1
x =
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Cos
-1
1/x
cosec
-1
1/x
Cos
-1
(-x)
Tan
-1
x
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Question # 7
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π / 4
π / 6
π / 3
0
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Question # 8
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20
10
0
None of these
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Question # 9
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Question # 10
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Question # 11
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Question # 12
Sin
-1
(-x)=
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Cos
-1
1/x
- Sin
-1
X
Cot
-1
X
None of these
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Question # 13
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Question # 14
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Question # 15
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Question # 16
Tan
-1
1/x = ______
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sin x
sec
-1
X
cot
-1
X
None of these
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Question # 17
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Question # 18
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Question # 19
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 # 20
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 # 21
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Question # 22
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Question # 23
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 # 24
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1
-1
0
None of these
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Question # 25
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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
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Question # 28
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16 / 7
6 / 17
7 / 16
None of these
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Question # 29
Ifπ≤x≤2π, then cos-1 (cos x)=
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cos x
-x
1/x
-x
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Question # 30
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 # 31
If cos (2 sin-1 x) = 1/9 , then what is the value of x?
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1/3
-2/3
2/3
2/3 , -2/3
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