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ECAT Mathematics Chapter 12 Trigonometric Functions and Identities Online Test MCQs With Answers
Question # 1
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 # 2
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Question # 3
tan
θ
/2
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Question # 4
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Question # 5
cos
θ/2=
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Question # 6
cos 315° = ______
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Question # 7
If ΔABC is right triangle then the law of Cosines reduces to
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The Pythagoras Theorem
The law of Sines
The law of cosines
The law of tangents
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Question # 8
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Question # 9
sin
2
α
cos
2
α
=
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-1
0
1
None of these
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Question # 10
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quadrant I
quadrant II
quadrant III
quadrant IV
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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
In any triangle ABC,with usual notationαsinβ =____;
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b sinα
bsinβ
αsinα
None of these
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Question # 16
cos (180° -
θ
)=
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sin
θ
- cos
θ
- sin
θ
None of above
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Question # 17
sec (-360°) = ______
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0
1
2
3
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Question # 18
Tan(
α
-
β
)=
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Question # 19
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Question # 20
Distance between A(3, 8), B(5, 6) is
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Question # 21
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1
-1
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Question # 22
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Question # 23
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quadrant I
quadrant II
quadrant III
quadrant IV
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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
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 # 29
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Question # 30
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