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ECAT Mathematics Chapter 16 Solution of Trigonometric Functions Online Test MCQs With Answers
Question # 1
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 # 2
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Question # 3
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both a & c
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Question # 4
The solution set of the equation 1 + Cos x = 0 is __________
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none of these
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Question # 5
If Sin A = sin B, cos A = cos B, then the value of A in terms of B is
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Question # 6
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none of these
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Question # 7
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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 # 8
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 # 9
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Question # 10
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none of these
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Question # 11
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From an empty set
1
2
>2
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Question # 12
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30°
45°
60°
75°
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Question # 13
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Question # 14
General solution of 1 + cos x = 0 is
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Question # 15
If 4 sin
2
θ
=1, then values of
θ
are
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Question # 16
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1
2
3
None of these
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Question # 17
cot
θ
= sin 2
θ
if
θ
=
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Question # 18
The smallest positive root of the equation tan x - x = 0 lies on
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Question # 19
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A finite non-empty set
Null set
Both a and b
None of these
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Question # 20
General solution of tan 5
θ
= cot 2
θ
is
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Question # 21
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all
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Question # 22
The number of points of intersection of two curves y = 2 sin x and y = 5x
2
+ 2x + 3 is
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0
1
2
None of these
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Question # 23
If sin 6
θ
+ sin 4
θ
+ sin 2
θ
, then
θ
=
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Question # 24
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Question # 25
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 # 26
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Question # 27
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none of these
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