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Mathematics ECAT Pre Engineering Chapter 16 Solution of Trigonometric Equations Online Test MCQs With Answers
Question # 1
The solution set of sin x + cos x = 0 is
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Question # 2
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 # 3
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Question # 4
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Question # 5
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all
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Question # 6
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Question # 7
If Sin A = sin B, cos A = cos B, then the value of A in terms of B is
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Question # 8
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Question # 9
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 # 10
If 4 sin
2
θ
=1, then values of
θ
are
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Question # 11
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Question # 12
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 # 13
General solution of tan 5
θ
= cot 2
θ
is
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Question # 14
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Question # 15
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Question # 16
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Question # 17
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 # 18
General solution of 1 + cos x = 0 is
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Question # 19
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Question # 20
The solution set of trigonometric equation contains
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one element
two elements
three elements
Infinite elements
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Question # 21
The general value of
θ
satisfying the equation 2 sin
2
θ
- 3 sin
θ
-2 = 0 is
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Question # 22
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From an empty set
1
2
>2
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Question # 23
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 # 24
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A finite non-empty set
Null set
Both a and b
None of these
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Question # 25
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Question # 26
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none of these
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Question # 27
If sin (
π
cos
θ
) = cos (
π
sin
θ
), then which of the following is correct?
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