Day 330: NDA Maths

1. A.
   $-\sin3\theta$
2. B.
   $-\cos3\theta$
3. C.
   $\sin3\theta$
4. D.
   $-\sin4\theta$

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1. A.
   Both the statements are true and Statement 2 is the correct explanation of Statement 1
2. B.
   Both the statements are true but Statement 2 is not the correct explanation of Statement 1
3. C.
   Statement 1 is true but Statement 2 is false
4. D.
   Statement 1 is false but Statement 2 is true

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

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1. A.
   8
2. B.
   $4\sqrt{6}$
3. C.
   $8\sqrt{6}$
4. D.
   16

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1. A.
   Null matrix
2. B.
   Identity matrix
3. C.
   $A$
4. D.
   $-A$

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