document.write( "Question 333719: 2 sinθ cosθ = cosθ \n" ); document.write( "
Algebra.Com's Answer #239165 by Alan3354(69443)\"\" \"About 
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2 sinθ cosθ = cosθ
\n" ); document.write( "2sin = 1
\n" ); document.write( "sin = 1/2
\n" ); document.write( "angle = 30º (principal value)
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