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ECAT Pre General Science Mathematics Chapter 16 Solution of Trigonometric Equations Online Test MCQs With Answers
Question # 1
By expressing cos 113° in terms of trigonometrical ratios, answer will be
Choose an answer
− cos 76° = -0.7093
− cos 65° = -0.4258
− cos 67° = -0.3907
− cos 62° = -0.8520
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Question # 2
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Question # 3
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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 # 4
One root of the equation cos x - x + 1/2 = 0 lies in the interval
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Question # 5
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1
2
3
None of these
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Question # 6
General solution of tan 5
θ
= cot 2
θ
is
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Question # 7
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Question # 8
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Question # 9
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No solution
One real solution
More than one real solution
None of these
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Question # 10
The general value of
θ
satisfying the equation 2 sin
2
θ
- 3 sin
θ
-2 = 0 is
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Question # 11
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Question # 12
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From an empty set
1
2
>2
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Question # 13
If 4 sin
2
θ
=1, then values of
θ
are
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Question # 14
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 # 15
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 # 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
cot
θ
= sin 2
θ
if
θ
=
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Question # 18
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none of these
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Question # 19
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all
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Question # 20
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Question # 21
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none of these
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Question # 22
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A finite non-empty set
Null set
Both a and b
None of these
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Question # 23
The solution set of sin x + cos x = 0 is
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Question # 24
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Question # 25
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none of these
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Question # 26
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 # 27
The solution set of trigonometric equation contains
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one element
two elements
three elements
Infinite elements
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Question # 28
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none of these
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Question # 29
The smallest positive root of the equation tan x - x = 0 lies on
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Question # 30
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trigonometric equation
conditional equation
identity
None
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