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ECAT Mathematics Chapter 15 Inverse Trigonometric Functions Online Test MCQs With Answers
Question # 1
cos
-1
(cos x) =
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x
cos x
x = 1/x
cos
-2
x
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Question # 2
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Question # 3
The range of the principal sine function is
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Question # 4
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Question # 5
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Question # 6
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Question # 7
Cos-1(x)=
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cos x
x
tan-1(-x)
Sec-1 (1/x)
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Question # 8
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1
7
4
None of these
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Question # 9
If 2 tan
1
(cos x) = tan
-1
(cosec
2
x), then x is equal to
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π
/ 3
π
/ 2
π
/ 6
π
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Question # 10
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1
0
3
-3
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Question # 11
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Question # 12
The domain of the principle sine function is
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Question # 13
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1/3
1
3
None of these
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Question # 14
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Question # 15
In the interval 0≤ x ≤ π, the sine is
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Not a function
Not defined
Infinity
Not one-to-one function
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Question # 16
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Question # 17
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 # 18
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Question # 19
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π / 3
π / 4
π / 6
0
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Question # 20
sn (2sin-10.8)
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0.56
0.69
-0.16
0.96
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Question # 21
The range of the principle cos function is
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Question # 22
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Question # 23
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π
/ 4
π
/ 6
π
/ 3
2π
/ 3
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Question # 24
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Question # 25
The number of triplets (x, y, z) satisfying sin
-1
x +cos
-1
y + sin
-1
z = 2
π
is
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0
2
1
Infinite
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Question # 26
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Question # 27
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0
1
-1
None of these
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Question # 28
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 # 29
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π
π / 2
π / 3
π / 4
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Question # 30
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Question # 31
Sin
-1
(-x)=
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Cos
-1
1/x
- Sin
-1
X
Cot
-1
X
None of these
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