Question

tanA=√2-1 then cotA=?​

Answer 1

Answer:

$( \sqrt{2} + 1) \:$

Step-by-step explanation:

$\tan(a) = \sqrt{2} - 1 \\ \cot(a ) = \frac{1}{\sqrt{2} - 1 } \\ \cot(a) = \frac{ (\sqrt{2} + 1) }{ (\sqrt{2} - 1) (\sqrt{2} + 1)} \\ \cot(a) = \frac{ ( \sqrt{2} + 1)}{2 - 1} \\ \cot(a) = ( \sqrt{2} + 1) \:$