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ECAT Pre General Science Mathematics Chapter 12 Trigonometric Functions and Identities Online Test MCQs With Answers
Question # 1
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Question # 2
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Question # 3
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Question # 4
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1
2
-2
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Question # 5
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Question # 6
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 # 7
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Question # 8
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Question # 9
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Question # 10
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-sin
θ
cos
θ
sin
θ
-cos
θ
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Question # 11
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Question # 12
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 # 13
sin 540° =
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0
1
2
3
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Question # 14
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quadrant I
quadrant II
quadrant III
quadrant IV
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Question # 15
cos
4
θ
- sin
4
θ
=
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cos4
θ
cos2
θ
-sin
θ
sin2
θ
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Question # 16
Let P(x
1
, y
1
) and Q(x
2
, y
2
) be two points in the co-ordinate plane. Let d = distance between P and Q
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Question # 17
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Question # 18
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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
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Question # 23
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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
sin
2
α
cos
2
α
=
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-1
0
1
None of these
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