Day 296: NDA Maths

1. A.
   $\sin\theta\cdot\sec^2\theta$
2. B.
   $\cos\theta\cdot\csc^2\theta$
3. C.
   $\cot\theta\cdot\sec^2\theta$
4. D.
   $2\tan\theta\cdot\csc^2\theta$

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1. A.
   $\frac{e+1}{4}$
2. B.
   $\frac{e^2+1}{4}$
3. C.
   $\frac{e-1}{4}$
4. D.
   $\frac{e^2-1}{4}$

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1. A.
   $17x^2y-6x^2+3x^5-2=0$
2. B.
   $6x^2y+17x^2+2x^5-3=0$
3. C.
   $6xy-2x^2+17x^5+3=0$
4. D.
   $17x^2y+6xy-3x^5+5=0$

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1. A.
   $-\cosec(x^{\circ})\cot(x^{\circ})$
2. B.
   $-\dfrac{\pi}{180}\cosec(x^{\circ})\cot(x^{\circ})$
3. C.
   $\dfrac{\pi}{180}\cosec(x^{\circ})\cot(x^{\circ})$
4. D.
   $-\dfrac{\pi}{180}\cosec(x)\cot(x)$

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

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