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ECAT Pre General Science Mathematics Chapter 15 Inverse Trigonometric Functions Online Test MCQs With Answers
Question # 1
Cos
-1
12/13 =
Choose an answer
tan
-1
3/5
cot
-1
13/12
Sec
-1
13/12
sin
-1
5/13
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Question # 2
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 # 3
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1
0
3
-3
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Question # 4
cos
-1
(cos x) =
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x
cos x
x = 1/x
cos
-2
x
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Question # 5
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 # 6
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1
-1
0
None of these
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Question # 7
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x = 3
x = 1/5
x = 0
None of these
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Question # 8
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Question # 9
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Question # 10
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Question # 11
The principal value of sin
-1
[-√(√3) /2] is
Choose an answer
5π/3
-2π/3
-
π/3
π/3
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Question # 12
The value of sin [ arc cos (-1/2)] is
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Question # 13
Ifπ≤x≤2π, then cos-1 (cos x)=
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cos x
-x
1/x
-x
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Question # 14
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π
/ 4
π
/ 6
π
/ 3
2π
/ 3
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Question # 15
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π / 3
π / 4
π / 6
0
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Question # 16
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 # 17
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 # 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
sin
-1
x =
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tan
-1
x
Cosec
-1
x
Cosec x
cosec
-1
(1/x)
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Question # 21
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Question # 22
tan
-1
x > cot
-1
x holds for
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x > 1
x < 1
x = 1
All values of x
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Question # 23
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Question # 24
The range of the principle cos function is
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Question # 25
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 # 26
sn (2sin-10.8)
Choose an answer
0.56
0.69
-0.16
0.96
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Question # 27
Tan
-1
1/x = ______
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sin x
sec
-1
X
cot
-1
X
None of these
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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
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Question # 30
If cos
-1
p + cos
-1
q + cos
-1
r =
π
then p
2
+ q
2
+ r
2
+ 2pqr is equal to
Choose an answer
3
1
2
-1
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