Question 328425
{{{4cos^2(x)=3}}}
{{{cos^2(x)=3/4}}}
{{{cos(x)=0 +- sqrt(3/4)}}}
{{{cos(x)=0 +- sqrt(3)/2}}}
Four solultions:
{{{x=pi/6}}}, {{{x=5pi/6}}},{{{4=7pi/6}}},{{{x=11pi/6}}}
{{{drawing(300,300,-2,7,-2,2,circle(pi/6,3/4,.13),circle(5pi/6,3/4,.13),circle(7pi/6,3/4,.13),circle(11pi/6,3/4,.13),
graph(300,300,-2,7,-2,2,(cos(x))^2,3/4))}}}