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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
sec (360°) = ______
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0
1
2
3
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Question # 3
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Question # 4
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Question # 5
sin 3a = ______;
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3sin a  4sin3a
4sin a 3 sin3 a
3 cos3 a cosa
4cos3 a  3cos a
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Question # 6
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Question # 7
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 # 8
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 # 9
sin(180° 
θ)=
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cos
θ
cos
θ
Tan
θ
Sin
θ
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Question # 10
sin (2
π

θ
)
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cos
θ
sin
θ
tan
θ
sin
θ
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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
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Question # 16
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Question # 17
cos2a=______;
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cos2 asin2 a
2cos2 a1
12 sin2 a
All of these
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Question # 18
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Question # 19
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Question # 20
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sin
θ
cos
θ
sin
θ
cos
θ
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Question # 21
cos (
α
+
β
) + cos (
α

β
) =
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4 cos
α
cos
β
2 cos
α
cos
β
2 sin
α
sin
β
2 sin
α
cos
β
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Question # 22
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Question # 23
tan
θ
/2
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Question # 24
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Question # 25
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Question # 26
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Question # 27
cos (180° 
θ
)=
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sin
θ
 cos
θ
 sin
θ
None of above
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Question # 28
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