Day 22: NDA Maths

1. A.
   4
2. B.
   3
3. C.
   2
4. D.
   1

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1. A.
   $y = \frac{x}{c + \sin x}$
2. B.
   $y = \frac{x}{c - \sin x}$
3. C.
   $y = \frac{x}{1 + c\sin x}$
4. D.
   $y = \frac{x}{1 - c\sin x}$

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1. A.
   $-1$
2. B.
   0
3. C.
   1
4. D.
   $q$

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1. A.
   I only
2. B.
   II only
3. C.
   Both I and II
4. D.
   Neither I nor II

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1. A.
   $\frac{h^2 \cos^2 \alpha}{\sin^2(\beta - \alpha)}$
2. B.
   $\frac{h^2 \cos^2 \beta}{\sin^2(\beta - \alpha)}$
3. C.
   $\frac{h^2 \cos^2 \alpha}{\sin^2(\beta + \alpha)}$
4. D.
   $\frac{h^2 \cos^2 \beta}{\sin^2(\beta + \alpha)}$

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1. A.
   $H = \sqrt{2} D$
2. B.
   $D = \sqrt{2} H$
3. C.
   $2H = \sqrt{3} D$
4. D.
   $H = D$

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