document.write( "Question 677946: Find all real numbers in the interval [0,2pi) that satisfy the equation. Use radian measure. 3sin 2x = sin x \n" ); document.write( "

Algebra.Com's Answer #421184 by lwsshak3(11628) $\"\"$ $\"About$

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Find all real numbers in the interval [0,2pi) that satisfy the equation. Use radian measure.
\n" ); document.write( "3sin 2x = sin x
\n" ); document.write( "3(2sinxcosx)=sinx
\n" ); document.write( "6cosx=1
\n" ); document.write( "cosx=1/6
\n" ); document.write( "using calculator set to radians:
\n" ); document.write( "x≈1.40, 4.88 (in quadrants I and IV where cos>0)
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