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ECAT Pre General Science Mathematics Chapter 12 Trigonometric Functions and Identities Online Test MCQs With Answers
Question # 1
cos 2
α=
Choose an answer
sin
2
α
+ cos
2
α
-cos
θ
tan
θ
None of these
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Question # 2
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Question # 3
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Question # 4
With usual notations b2 = a2 + c2 -2ac cos is called______;
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None of these
Law of sines
Law of consines
Law of tangents
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Question # 5
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Question # 6
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Question # 7
cos2a=______;
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cos2 a-sin2 a
2cos2 a-1
1-2 sin2 a
All of these
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Question # 8
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Question # 9
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Question # 10
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Question # 11
Tan 2
θ=
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Question # 12
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Question # 13
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1
2
-2
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Question # 14
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Question # 15
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Question # 16
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Question # 17
cos 315° = ______
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Question # 18
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Question # 19
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Question # 20
tan (-135°) = ______
θ
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0
1
2
3
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Question # 21
tan
θ
/2
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Question # 22
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Question # 23
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Question # 24
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Question # 25
sin
2
α
cos
2
α
=
Choose an answer
-1
0
1
None of these
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Question # 26
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Question # 27
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 # 28
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