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Mathematics ECAT Pre Engineering Chapter 16 Solution of Trigonometric Equations Online Test MCQs With Answers
Question # 1
If 4 sin
2
θ
=1, then values of
θ
are
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Question # 2
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Question # 3
If sin 6
θ
+ sin 4
θ
+ sin 2
θ
, then
θ
=
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Question # 4
The general solution of tan 3x = 1 is
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Question # 5
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 # 6
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Question # 7
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Question # 8
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Question # 9
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all
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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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none of these
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Question # 13
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 # 14
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 # 15
General solution of 1 + cos x = 0 is
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Question # 16
The solution of the equation 3 tan
2
x = 1 is ____________
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none of these
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Question # 17
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both a & c
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Question # 18
One root of the equation cos x - x + 1/2 = 0 lies in the interval
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Question # 19
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Question # 20
If sin (
π
cos
θ
) = cos (
π
sin
θ
), then which of the following is correct?
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Question # 21
Sine rule for a triangle states that
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a/sin A = b/sin B = c/sin C
sin A/a = sin B/b = sin C/c
a/sin A + b/sin B + c/sin C
2a/sin A = 2b/sin B = 2c/sin C
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Question # 22
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1
2
3
None of these
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Question # 23
General solution of tan 5
θ
= cot 2
θ
is
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Question # 24
The solution of the equation cos
2
θ
+ sin
θ
+ 1 = 0 lies in the interval
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Question # 25
The solution set of trigonometric equation contains
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one element
two elements
three elements
Infinite elements
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Question # 26
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 # 27
The smallest positive root of the equation tan x - x = 0 lies on
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Question # 28
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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 # 29
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 # 30
The solution set of the equation 1 + Cos x = 0 is __________
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none of these
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