Question 313258
{{{2(sin(theta))^2=1}}}
{{{sin(theta)^2=1/2}}}
{{{sin(theta)=0 +- 1/sqrt(2)=0 +- sqrt(2)/2}}}
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{{{theta=45}}} and {{{theta=135}}} and {{{theta=225}}} and {{{theta=315}}
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{{{2*pi}}} radians={{{360}}} degrees
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{{{theta=45((2*pi)/360)=pi/4}}} and {{{theta=135((2*pi)/360)=(3*pi)/4}}}
{{{theta=225((2*pi)/360)=(5*pi)/4}}} and {{{theta=315((2*pi)/360)=(7*pi)/4}}}