Question:
If $\sqrt{2}=1.41$ then $\frac{1}{\sqrt{2}}=?$
(a) $0.075$
(b) $0.75$
(c) $0.705$
(d) $7.05$
Solution:
$\frac{1}{\sqrt{2}}=\frac{1}{\sqrt{2}} \times \frac{\sqrt{2}}{\sqrt{2}}=\frac{\sqrt{2}}{2}$
Given : $\sqrt{2}=1.41$
So, $\frac{\sqrt{2}}{2}=\frac{1.41}{2}=0.705$
Hence, the correct answer is option (c).