Day 383: NDA Maths

1. A.
   $\sin 50°$
2. B.
   $\cos 50°$
3. C.
   $1/\sqrt{2}$
4. D.
   0

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1. A.
   The triangle ABC is isosceles
2. B.
   The triangle ABC is equilateral
3. C.
   The triangle ABC is scalene
4. D.
   No conclusion can be drawn with regard to the nature of the triangle

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1. A.
   1 and 2 only
2. B.
   1 and 3 only
3. C.
   2 and 3 only
4. D.
   1, 2 and 3

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1. A.
   An odd multiple of 90 degrees
2. B.
   A multiple of 90 degrees
3. C.
   An odd multiple of 180 degrees
4. D.
   A multiple of 180 degrees

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1. A.
   $A = A^2$
2. B.
   $A' = A^{-1}$
3. C.
   $A = A^{-1}$
4. D.
   $A = A'$

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