Question 743983
{{{sec(theta)-2tan(theta)=0}}}


{{{1/cos(theta)-(2sin(theta))/cos(theta)=0}}}


{{{(1-2sin(theta))/cos(theta)=0}}}

but the denominator contributes no zeros...

{{{1-2sin(theta)=0}}}


{{{sin(theta)=1/2}}}

on {{{0<=x<=2pi}}}
{{{theta=pi/6}}} 

or

{{{theta=(5pi)/6}}} 

so the general solution is 

{{{2 *pi* n+pi/6}}}
or
{{{2* pi *n+5pi/6}}}