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ECAT Mathematics Chapter 15 Inverse Trigonometric Functions Online Test MCQs With Answers
Question # 1
sin
-1
x =
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tan
-1
x
Cosec
-1
x
Cosec x
cosec
-1
(1/x)
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Question # 2
The domain of the principal tan function is
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Question # 3
Ifπ≤x≤2π, then cos-1 (cos x)=
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cos x
-x
1/x
-x
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Question # 4
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Question # 5
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 # 6
The range of the principle cot function is
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Question # 7
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 # 8
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 # 9
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Question # 10
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Question # 11
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π
/ 2
π
/ 3
π
/ 4
π
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Question # 12
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π
/ 4
π
/ 6
π
/ 3
2π
/ 3
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Question # 13
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 # 14
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16 / 7
6 / 17
7 / 16
None of these
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Question # 15
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Question # 16
If cos
-1
p + cos
-1
q + cos
-1
r =
π
then p
2
+ q
2
+ r
2
+ 2pqr is equal to
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3
1
2
-1
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Question # 17
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 # 18
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 # 19
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Question # 20
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Question # 21
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Question # 22
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Question # 23
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 # 24
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Question # 25
Cos
-1
12/13 =
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tan
-1
3/5
cot
-1
13/12
Sec
-1
13/12
sin
-1
5/13
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Question # 26
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Question # 27
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 # 28
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0
1
-1
None of these
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Question # 29
The domain of the principle sine function is
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Question # 30
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0
-1
1/2
1
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