1
NDA Mathematics 16 April 2023
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
If f(x) = x(4x2 - 3), then what is f(sinθ) equal to ?  
A
-sin3θ
B
-cos3θ
C
sin3θ
D
-sin4θ
2
NDA Mathematics 4 September 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
What is the value of cosec$\left(−\frac{73 \pi}{3}\right)$ ?
A
$\frac{2}{\sqrt{3}}$
B
$−\frac{2}{\sqrt{3}}$
C
2
D
−2
3
NDA Mathematics 4 September 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
What is the value of $\cos \left(\frac{5 \pi}{17}\right)+\cos \left(\frac{7 \pi}{17}\right)+2 \cos \left(\frac{11 \pi}{17}\right) \cos \left(\frac{\pi}{17}\right)$ ?
A
0
B
1
C
4 cos$\left(\frac{6 \pi}{17}\right)$ cos$\left(\frac{\pi}{17}\right)$
D
4 cos$\left(\frac{11 \pi}{17}\right)$ cos$\left(\frac{\pi}{17}\right)$
4
NDA Mathematics 4 September 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
What is the value of tan$\left(\frac{3\pi}{8}\right)$ ?
A
$​\sqrt{2}$ − 1
B
$​\sqrt{2}$ + 1
C
1 − $\sqrt{2}$
D
−($\sqrt{2}$ + 1)
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