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Online Tests
Mathematics ECAT Pre Engineering Chapter 15 Inverse Trigonometric Functions Online Test MCQs With Answers
Question # 1
If 2 tan
1
(cos x) = tan
-1
(cosec
2
x), then x is equal to
Choose an answer
π
/ 3
π
/ 2
π
/ 6
π
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Question # 2
Sec
-1
x =
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Cos
-1
1/x
cosec
-1
1/x
Cos
-1
(-x)
Tan
-1
x
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Question # 3
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 # 4
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1
7
4
None of these
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Question # 5
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Question # 6
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Question # 7
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Question # 8
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Question # 9
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π
π / 2
π / 3
π / 4
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Question # 10
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Question # 11
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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 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 # 15
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Question # 16
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Question # 17
What is the value of cos (cos-1 2) ?
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√2
1/2
undefine
0
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Question # 18
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Question # 19
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 # 20
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 # 21
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Question # 22
sn (2sin-10.8)
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0.56
0.69
-0.16
0.96
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Question # 23
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Question # 24
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 # 25
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 # 26
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Question # 27
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Question # 28
The principal value of sin
-1
(-1/2)
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π/3
π/4
π/6
-π/6
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Question # 29
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 # 30
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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