document.write( "Question 61461: QUICK!
\n" ); document.write( "Could someone help me with this question.\r
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\n" ); document.write( "\n" ); document.write( "Solve \"cos2x=sqrt%282%29%2F2\" in an algebaic manner and state the general solutions.\r
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\n" ); document.write( "\n" ); document.write( "Best regards in advance...
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Algebra.Com's Answer #44857 by 303795(602)\"\" \"About 
You can put this solution on YOUR website!
\"cos2x=sqrt%282%29%2F2\"
\n" ); document.write( "Divide top and bottom on the Right Hand Side by \"sqrt%282%29\" to get
\n" ); document.write( "\"cos2x=1%2Fsqrt%282%29%29\"\r
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\n" ); document.write( "\n" ); document.write( "Cos (45) = cos (135) =\"1%2F%28sqrt%282%29%29\"
\n" ); document.write( "So x = 22.5 degrees or x = 67.5 degrees.
\n" ); document.write( "The Cos function is periodic so these values will repeat every 360 degrees
\n" ); document.write( "so x = 22.5 + 360n where n is any integer
\n" ); document.write( "or
\n" ); document.write( "so x = 67.5 + 360n where n is any integer
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