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ECAT Pre General Science Mathematics Chapter 16 Solution of Trigonometric Equations Online Test MCQs With Answers
Question # 1
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Question # 2
The general solution of tan 3x = 1 is
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Question # 3
One root of the equation cos x - x + 1/2 = 0 lies in the interval
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Question # 4
If Sin A = sin B, cos A = cos B, then the value of A in terms of B is
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Question # 5
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none of these
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Question # 6
cot
θ
= sin 2
θ
if
θ
=
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Question # 7
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Question # 8
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Question # 9
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none of these
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Question # 10
cot
θ
= sin 2
θ
if
θ
=
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Question # 11
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Question # 12
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 # 13
General solution of tan 5
θ
= cot 2
θ
is
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Question # 14
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trigonometric equation
conditional equation
identity
None
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Question # 15
By expressing cos 113° in terms of trigonometrical ratios, answer will be
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− cos 76° = -0.7093
− cos 65° = -0.4258
− cos 67° = -0.3907
− cos 62° = -0.8520
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Question # 16
If 4 sin
2
θ
=1, then values of
θ
are
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Question # 17
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Question # 18
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 # 19
The solution set of sin x + cos x = 0 is
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Question # 20
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A finite non-empty set
Null set
Both a and b
None of these
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Question # 21
The smallest positive root of the equation tan x - x = 0 lies on
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Question # 22
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 # 23
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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
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none of these
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Question # 26
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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 # 27
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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