Question

& Ratonalise
the denominator of 1/√2​

Answer 1

$\: \: \: \frac{1}{ \sqrt{2} } \\ = > \frac{1}{ \sqrt{2} } \times \frac{ \sqrt{2} }{ \sqrt{2} } \\ = > \frac{ \sqrt{2} }{2}$

HOPE ITS HELPS U..

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Answer 2

1/root2×root2/-root2

root2by 2