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Mathematics ECAT Pre Engineering Chapter 12 Trigonometric Functions and Identities Online Test MCQs With Answers
Question # 1
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Question # 2
sin
2
α
cos
2
α
=
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-1
0
1
None of these
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Question # 3
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Question # 4
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Question # 5
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Question # 6
In any triangle ABC,with usual notationαsinβ =____;
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b sinα
bsinβ
αsinα
None of these
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Question # 7
sin(180° -
θ)=
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cos
θ
-cos
θ
Tan
θ
Sin
θ
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Question # 8
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1
-1
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Question # 9
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Question # 10
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1
2
-2
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Question # 11
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Question # 12
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Question # 13
cos 315° = ______
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Question # 14
sec (-360°) = ______
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0
1
2
3
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Question # 15
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Question # 16
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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
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Question # 22
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Question # 23
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Question # 24
Tan 2
θ=
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Question # 25
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-sin
θ
cos
θ
sin
θ
-cos
θ
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Question # 26
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quadrant I
quadrant II
quadrant III
quadrant IV
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Question # 27
cos
4
θ
- sin
4
θ
=
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cos4
θ
cos2
θ
-sin
θ
sin2
θ
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Question # 28
sin (
α
+
β
) + sin (
α
-
β
)
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2 sin
α
cos
β
sin (2
α
β)
sin
α
cos
α
None of these
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Question # 29
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Question # 30
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Question # 31
2cos2 a/2 =______;
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1+sina
1-sina
1+cosa
1-cosa
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