Question 337034
{{{tan(X)^2+ tanX=0}}}
{{{tan(X)(tan(X)+1)=0}}}
Two solutions:
{{{tan(X)=0}}}
{{{X=0}}}
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{{{tan(X)=-1}}}
{{{X=(3*pi)/4}}}, {{{(3*pi)/4+pi=(7*pi)/4}}}