Day 150: CDS Maths

1. A.
   $\cos^2 A - \sin^2 A$
2. B.
   $\cos A - \sin A$
3. C.
   1
4. D.
   2

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1. A.
   60 m
2. B.
   65 m
3. C.
   68 m
4. D.
   70 m

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1. A.
   1980 m$^2$
2. B.
   2010 m$^2$
3. C.
   2100 m$^2$
4. D.
   2240 m$^2$

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1. A.
   14450
2. B.
   14480
3. C.
   14580
4. D.
   14850

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1. A.
   $\frac{100(a+b)}{x-y}$
2. B.
   $\frac{100(a-b)}{x+y}$
3. C.
   $\frac{100(a+b)}{y-x}$
4. D.
   $\frac{100(a-b)}{x-y}$

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1. A.
   2
2. B.
   3
3. C.
   5
4. D.
   6

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

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