1
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
What is the maximum value of the function f(x) = 4sin2 x + 1 ?
A
5
B
3
C
2
D
1
2
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
What is $${{2\tan \theta } \over {1 + {{\tan }^2}\theta }}$$ equal to?
A
cos2$$\theta$$
B
tan2$$\theta$$
C
sin2$$\theta$$
D
cosec2$$\theta$$
3
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If $$\sec (\theta - \alpha )$$, $$\sec \theta $$ and $$\sec (\theta + \alpha )$$ are in AP, where cos $$\alpha$$ $$\ne$$ 1, then what is the value of sin2$$\theta$$ + cos$$\alpha$$ ?
A
0
B
1
C
$$-$$ 1
D
$${1 \over 2}$$
4
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If A + B + C = 180$$^\circ$$, then what is $$\sin 2A - \sin 2B - \sin 2C$$ equal to?
A
$$-$$4 sin A sin B sin C
B
$$-$$4 cos A sin B cos C
C
$$-$$4 cos A cos B sin C
D
$$-$$4 sin A cos B cos C
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