document.write( "Question 1030817: Simplify completely: √(1 + cos80°)/2) \n" ); document.write( "

Algebra.Com's Answer #645593 by ikleyn(52864) $\"\"$ $\"About$

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\n" ); document.write( "Simplify completely: √(1 + cos80°)/2)
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document.write( "Use the formula for half-argument\r\n" );
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document.write( " = \r\n" );
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document.write( "(see the lesson  Trigonometric functions of half argument  in this site).\r\n" );
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document.write( "You will get\r\n" );
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document.write( " = \r\n" );
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