document.write( "Question 622502: please help me solve:\r
\n" ); document.write( "\n" ); document.write( "2 cos(x/2) + 1 = 1 \n" ); document.write( "

Algebra.Com's Answer #391442 by KMST(5328) $\"\"$ $\"About$

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$\"2+cos%28x%2F2%29+%2B+1+=+1\"$ --> $\"2+cos%28x%2F2%29=0\"$ (subtracting 1 from both sides of the equal sign.
\n" ); document.write( " $\"2+cos%28x%2F2%29=0\"$ --> $\"cos%28x%2F2%29=0\"$
\n" ); document.write( " $\"x%2F2=pi%2F2\"$ , and $\"x%2F2=3pi%2F2\"$ are solutions
\n" ); document.write( "So are all angles co-terminal to those two, and the whole set can be written as
\n" ); document.write( " $\"x%2F2=%282n%2B1%29%2Api%2F2\"$ for all n integers
\n" ); document.write( "So the solution set is (multiplying both sides of the equal sign times 2)
\n" ); document.write( " $\"x=%282n%2B1%29%2Api\"$ for all n integers
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