Day 129: MHT-CET Maths

1. A.
   $a^2+b^2-c^2$
2. B.
   $c^2+a^2-b^2$
3. C.
   $b^2-c^2-a^2$
4. D.
   $c^2-a^2-b^2$

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1. A.
   no real root
2. B.
   exactly two real roots
3. C.
   exactly one real root.
4. D.
   more than two real roots.

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

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1. A.
   $16\pi\ \text{cm/sec}$
2. B.
   $\frac{16}{\pi}\ \text{cm/sec}$
3. C.
   $\frac{1}{16\pi}\ \text{cm/sec}$
4. D.
   $\frac{\pi}{16}\ \text{cm/sec}$

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1. A.
   $x^2+y^2-2ax-2py+b^2+q^2=0$
2. B.
   $x^2+y^2-2ax-2py-b^2-q^2=0$
3. C.
   $x^2+y^2+2ax+2py+b^2+q^2=0$
4. D.
   $x^2+y^2+2ax+2py-b^2-q^2=0$

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