Day 85: NDA Maths

1. A.
   $-10$
2. B.
   $-14$
3. C.
   $-24$
4. D.
   $-34$

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1. A.
   $e^{x}\tan y\,dx + (1-e^{x})\,dy = 0$
2. B.
   $e^{x}\tan y\,dx + (1-e^{x})\sec^{2}y\,dy = 0$
3. C.
   $e^{x}(1-e^{x})\,dx + \tan y\,dy = 0$
4. D.
   $e^{x}\tan y\,dy + (1-e^{x})\,dx = 0$

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1. A.
   $\dfrac{1}{4}$
2. B.
   $\dfrac{1}{3}$
3. C.
   $\dfrac{1}{2}$
4. D.
   1

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1. A.
   $C(47, 4)$
2. B.
   $C(52, 5)$
3. C.
   $C(52, 4)$
4. D.
   $C(47, 5)$

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1. A.
   30°
2. B.
   45°
3. C.
   60°
4. D.
   75°

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