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Online Tests
ECAT Mathematics Chapter 15 Inverse Trigonometric Functions Online Test MCQs With Answers
Question # 1
The exact value of cos-1 (0) is
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π/2
-π/2
3π
π-π/6
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Question # 2
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Question # 3
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π / 3
π / 4
π / 2
π
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Question # 4
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Question # 5
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Question # 6
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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Question # 7
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Question # 8
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 # 9
Cos (cos4π/3)=
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π/2
π/3
2π/3
-π/3
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Question # 10
The solution set of the equation tan
-1
x - cot
-1
x = cos
-1
(2 - x) is
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[0, 1]
[-1, 1]
[1, 3]
None of these
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Question # 11
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0
1
-1
None of these
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Question # 12
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Question # 13
sin
-1
x =
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tan
-1
x
Cosec
-1
x
Cosec x
cosec
-1
(1/x)
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Question # 14
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 # 15
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Question # 16
The range of the principle cos function is
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Question # 17
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Question # 18
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 # 19
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 # 20
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Question # 21
What is the value of cos-1(1/2)?
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π/3
π/4
3π/2
π/6
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Question # 22
Tan
-1
1/x = ______
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sin x
sec
-1
X
cot
-1
X
None of these
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Question # 23
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Question # 24
tan(cot
-1
x) is equal to
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cot(tan
-1
x)
tan x
secon x
None of these
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Question # 25
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Question # 26
tan
-1
(1/4) + tan
-1
(2/9) is equal to
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1/2 cos
-1
(3/5)
1/2 sin
-1
(3/5)
1/2 tan
-1
(3/5)
tan
-1
1/2
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Question # 27
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Question # 28
The value of sin-1 24/25 is equal to
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csc-1 25/24
sec-1 24/25
2 tan-1 4/5
2cos-1 24/25
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Question # 29
The domain of the principle sine function is
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Question # 30
Cos-1(x)=
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cos x
x
tan-1(-x)
Sec-1 (1/x)
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Question # 31
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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