Solve $cot (x/2) = sqrt(3)/3$ ?

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Answer 1 · 2018-05-16T00:34:40

I got 2pi/3

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explanation is in picture

Answer 2 · 2018-05-16T01:02:20

$x = (2pi)/3 + 2kpi$

$cot (x/2) = sqrt3/3$
$tan (x/2) = 1/(cot) = 3/sqrt3 = sqrt3$
Trig table and unit circle give -->
$x/2 = pi/3 + kpi$
$x = (2pi)/3 + 2kpi$

Solve cot (x/2) = sqrt(3)/3cot (x/2) = sqrt(3)/3 ?