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Mathematics ECAT Pre Engineering Chapter 16 Solution of Trigonometric Equations Online Test MCQs With Answers
Question # 1
If Sin A = sin B, cos A = cos B, then the value of A in terms of B is
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Question # 2
The solution of the equation 3 tan
2
x = 1 is ____________
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none of these
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Question # 3
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30°
45°
60°
75°
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Question # 4
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none of these
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Question # 5
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Question # 6
General solution of 1 + cos x = 0 is
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Question # 7
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none of these
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Question # 8
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 # 9
cot
θ
= sin 2
θ
if
θ
=
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Question # 10
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1
2
3
None of these
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Question # 11
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Question # 12
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Question # 13
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7
5
6
None of these
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Question # 14
By expressing sin 125° in terms of trigonometrical ratios, answer will be
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sin 65° = 0.9128
sin 55° = 0.8192
sin 70° = 0.5384
sin 72° = 0.1982
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Question # 15
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Question # 16
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 # 17
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I and
I
I quadrants
I
I and
I
I
I quadrants
I
I and
I
V
quadrants
none of these
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Question # 18
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none of these
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Question # 19
One root of the equation cos x - x + 1/2 = 0 lies in the interval
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Question # 20
The solution set of sin x + cos x = 0 is
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Question # 21
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Question # 22
The solution set of trigonometric equation contains
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one element
two elements
three elements
Infinite elements
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Question # 23
If 4 sin
2
θ
=1, then values of
θ
are
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Question # 24
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Question # 25
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From an empty set
1
2
>2
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Question # 26
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Question # 27
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all
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