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ECAT Mathematics Chapter 16 Solution of Trigonometric Functions Online Test MCQs With Answers
Question # 1
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none of these
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Question # 2
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Question # 3
If 4 sin
2
θ
=1, then values of
θ
are
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Question # 4
cot
θ
= sin 2
θ
if
θ
=
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Question # 5
The number of values of x in the interval [0, 5
π
] satisfying the equation 3 sin
2
x - 7 sinx + 2 = 0 is
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0
5
6
10
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Question # 6
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Question # 7
Considering Cosine Rule of any triangle ABC, possible measures of angle A includes
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Angle A is obtuse
Angle A is acute
Angle A is right-angle
All of above
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Question # 8
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1
2
3
None of these
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Question # 9
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A finite non-empty set
Null set
Both a and b
None of these
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Question # 10
General solution of tan 5
θ
= cot 2
θ
is
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Question # 11
The solution set of the equation 4 cos
2
x - 3 + 0 is
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none of these
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Question # 12
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none of these
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Question # 13
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none of these
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Question # 14
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Question # 15
The solution set of trigonometric equation contains
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one element
two elements
three elements
Infinite elements
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Question # 16
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Question # 17
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both a & c
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Question # 18
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Question # 19
The smallest positive root of the equation tan x - x = 0 lies on
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Question # 20
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Question # 21
If Sin A = sin B, cos A = cos B, then the value of A in terms of B is
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Question # 22
The number of solution of the equation tan x + sec x = 2 cos x lying in the interval [0, 2
π
] is
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0
1
2
3
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Question # 23
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none of these
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Question # 24
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Question # 25
In a triangle ABC, if angle A = 72° , angle B = 48° and c = 9 cm then Ĉ is
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69°
66°
60°
63°
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Question # 26
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Question # 27
The general value of
θ
satisfying the equation 2 sin
2
θ
- 3 sin
θ
-2 = 0 is
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Question # 28
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I and
I
I quadrants
I
I and
I
I
I quadrants
I
I
I and
I
V
quadrants
none of these
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Question # 29
For Cosine Rule of any triangle ABC, b
2
is equal to
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a
2
- c
2
+ 2ab cos A
a
3
+ c
3
- 3ab cos A
a
2
+ c
2
- 2ac cos B
a
2
- c
2
4bc cos A
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Question # 30
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From an empty set
1
2
>2
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