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ECAT Mathematics Chapter 12 Trigonometric Functions and Identities Online Test MCQs With Answers
Question # 1
sin (
α
+
β
) - sin (
α -
β
) =
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4 cos
α
sin
β
2 cos
α
sin
β
4 cos
α
cos
β
4 sin
α
sin
β
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Question # 2
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Question # 3
cos
θ/2=
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Question # 4
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Question # 5
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Question # 6
Express as a sum or difference: 2 sin 5
θ
cos
θ
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cos 4
θ
- cos 2
θ
sin 4
θ
+ sin 2
θ
cos 4
θ
+ cos 2
θ
sin 4
θ
- sin 2
θ
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Question # 7
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Question # 8
Tan 2
θ=
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Question # 9
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Question # 10
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Question # 11
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Question # 12
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Question # 13
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Question # 14
Cos (
α
+
β
) - cos (
α
-
β
) =
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-2 sin
α
sin
β
2 sin
α
cos
β
-2 sin
α
cos
α
4 sin
α
cos
β
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Question # 15
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-sin
θ
cos
θ
sin
θ
-cos
θ
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Question # 16
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Question # 17
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quadrant I
quadrant II
quadrant III
quadrant IV
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Question # 18
2cos2 a/2 =______;
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1+sina
1-sina
1+cosa
1-cosa
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Question # 19
In any triangle ABC,with usual notationαsinβ =____;
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b sinα
bsinβ
αsinα
None of these
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Question # 20
Fundamental law is
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Question # 21
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1
2
-2
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Question # 22
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Question # 23
sin 540° =
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0
1
2
3
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Question # 24
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Question # 25
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Question # 26
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Question # 27
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Question # 28
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Question # 29
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Question # 30
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Question # 31
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