Question

If secA+tanA=m and secA-tanA=n,find the value of √mn.

Answer 1

$\sqrt{mn}$
$\sqrt{(secA+tanA)(secA-tanA)}$
$\sqrt{sec^{2}A-tan^{2}A }$
$\sqrt{1}=1$

Answer 2

On multiplying the value of m and n with under root