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ECAT Pre General Science Mathematics Chapter 12 Trigonometric Functions and Identities Online Test MCQs With Answers
Question # 1
Tan(
α
-
β
)=
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Question # 2
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 # 3
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Question # 4
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-sin
θ
cos
θ
sin
θ
-cos
θ
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Question # 5
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Question # 6
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 # 7
tan
θ
/2
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Question # 8
sin (
α +
β)=
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sin
α
cos
β
- cos
α
sin
β
sin
α
cos
β
- cos
α
sin
β
sin
α
cos
α
- cos
β
sin
β
sin
α
cos
α
+ cos
β
sin
β
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Question # 9
sin 540° =
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0
1
2
3
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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
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Question # 15
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Question # 16
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Question # 17
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Question # 18
Which one is a pair of allied angles
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(180° -
θ)
(180° -
θ,
180° +
θ)
(180° +
θ)
None of these
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Question # 19
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Question # 20
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Question # 21
cos 2
α=
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sin
2
α
+ cos
2
α
-cos
θ
tan
θ
None of these
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Question # 22
cos 315° = ______
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Question # 23
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Question # 24
cos 3a =_______;
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3sin a - 4sin3 a
4sin a - 3sin3 a
3cos3 a - 4cos a
4cos3a - 3cos a
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Question # 25
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1
2
-2
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Question # 26
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Question # 27
tan (-135°) = ______
θ
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0
1
2
3
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Question # 28
The law of cosines reduces to a2 +c2 =b2 for
Choose an answer
α = 90°
β = 90°
γ = 90°
α +β +γ =180°
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