document.write( "Question 978388: i need help please!
\n" ); document.write( "Find cos(u/2) if tan(u)=−1.582 and u is in Quadrant-II.
\n" ); document.write( "cos(u/2)=??
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Algebra.Com's Answer #599817 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+tan%28u%29+=+-1.582+\"$
\n" ); document.write( " $\"+u+=+arctan+%28+-1.582+%29+\"$
\n" ); document.write( "By my calculator:
\n" ); document.write( " $\"+u+=+180+-+57.7026+\"$ degrees
\n" ); document.write( " $\"+u+=+122.2974+\"$
\n" ); document.write( " $\"+u%2F2+=+61.149+\"$ degrees
\n" ); document.write( " $\"+cos%28+61.149+%29+=+.4825+\"$
\n" ); document.write( "Hope I got it\r
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