document.write( "Question 603103: Solve over [0,360): sin^2 theta = cos^2 theta + 1 \n" ); document.write( "
Algebra.Com's Answer #380586 by Alan3354(69443)\"\" \"About 
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Solve over [0,360): sin^2 theta = cos^2 theta + 1
\n" ); document.write( "sin^2 theta - cos^2 theta - 1 = 0
\n" ); document.write( "sin^2 theta - cos^2 theta - sin^2 theta - cos^2 theta = 0
\n" ); document.write( "2cos^2 = 0
\n" ); document.write( "theta = 90 degs, 270 degs
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