document.write( "Question 724718: solve the equation on the interval 0 < or equal to theta < 2pi .
\n" ); document.write( "4cos^2 theta = 1 \n" ); document.write( "
Algebra.Com's Answer #443865 by solver91311(24713)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "Divide both sides by 4, take the square root. Then find all of the angles in the given interval where the cosine is equal to \r
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\n" ); document.write( "\n" ); document.write( "John
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\n" ); document.write( "Egw to Beta kai to Sigma
\n" ); document.write( "My calculator said it, I believe it, that settles it
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