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Online Tests
ECAT Pre General Science Mathematics Chapter 12 Trigonometric Functions and Identities Online Test MCQs With Answers
Question # 1
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 # 2
tan (-135°) = ______
θ
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0
1
2
3
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Question # 3
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quadrant I
quadrant II
quadrant III
quadrant IV
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Question # 4
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Question # 5
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Question # 6
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Question # 7
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Question # 8
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Question # 9
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 # 10
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Question # 11
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 # 12
sin
2
α
cos
2
α
=
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-1
0
1
None of these
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Question # 13
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 # 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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1
2
-2
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Question # 17
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Question # 18
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Question # 19
cos 315° = ______
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Question # 20
sin 2
α
=
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Question # 21
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 # 22
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 # 23
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Question # 24
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Question # 25
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 # 26
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 # 27
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Question # 28
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