Matrices & Determinants · NDA previous year questions

2017 27 questions

1. Q372017 · 23 Apr 2017

   If $\sin A=\frac{3}{5}$, where $450^{\circ }<A<540^{\circ }$, then $\cos \frac{A}{2}$ is equal to

   1. A.$\frac{1}{\sqrt{10}}$
   2. B.$-\sqrt{\frac{3}{10}}$
   3. C.$\frac{\sqrt{3}}{\sqrt{10}}$
   4. D.None of the above
   Show answer

   Answer: D

2. Q382017 · 23 Apr 2017

   What is $\frac{1}{\sin 10^{\circ }}-\frac{\sqrt{3}}{\cos 10^{\circ }}$ equal to?

   1. A.0
   2. B.1
   3. C.2
   4. D.4
   Show answer

   Answer: D