document.write( "Question 994174: for which value of theta is this expression undefined?
\n" ); document.write( " Sin theta/ 1 + 2 cos theta
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Algebra.Com's Answer #614079 by stanbon(75887)\"\" \"About 
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for which value of theta is this expression undefined?
\n" ); document.write( "Sin theta/ (1 + 2 cos(t))
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\n" ); document.write( "Undefined when 1+2cos(t) = 0
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\n" ); document.write( "Solve:: 1 + 2cos(t) = 9
\n" ); document.write( "cos(t) = -1/2
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\n" ); document.write( "t = (2/3)pi or 60 degrees
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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