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Online Tests
ECAT Mathematics Chapter 15 Inverse Trigonometric Functions Online Test MCQs With Answers
Question # 1
If cos (2 sin-1 x) = 1/9 , then what is the value of x?
Choose an answer
1/3
-2/3
2/3
2/3 , -2/3
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Question # 2
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Question # 3
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π
/ 4
π
/ 6
π
/ 3
2π
/ 3
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Question # 4
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20
10
0
None of these
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Question # 5
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Question # 6
tan(cot
-1
x) is equal to
Choose an answer
cot(tan
-1
x)
tan x
secon x
None of these
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Question # 7
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 # 8
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 # 9
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Question # 10
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1/3
1
3
None of these
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Question # 11
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0
-1
1/2
1
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Question # 12
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 # 13
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Question # 14
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 # 15
Cos-1(x)=
Choose an answer
cos x
x
tan-1(-x)
Sec-1 (1/x)
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Question # 16
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Question # 17
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Question # 18
Cos (cos4π/3)=
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π/2
π/3
2π/3
-π/3
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Question # 19
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π
/ 2
π
/ 3
π
/ 4
π
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Question # 20
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Question # 21
tan
-1
(1/4) + tan
-1
(2/9) is equal to
Choose an answer
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 # 22
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 # 23
The exact value of cos
-1
(-1) + cos
-1
(1) =
Choose an answer
π
-π
π/2
π/3
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Question # 24
The exact degree value of the function sin-1( -√3/2) is
Choose an answer
70
ο
50
ο
90
ο
60
ο
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Question # 25
Ifπ≤x≤2π, then cos-1 (cos x)=
Choose an answer
cos x
-x
1/x
-x
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Question # 26
The Principal value of sin-1 (-1/1/2)
Choose an answer
π/2
-π/2
π
-π
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Question # 27
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 # 28
The range of the principal sine function is
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Question # 29
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Question # 30
The range of the principle cot function is
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Question # 31
cos
-1
(cos x) =
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x
cos x
x = 1/x
cos
-2
x
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