document.write( "Question 1183418: u and v are unit vectors and the angle is pi/3
\n" ); document.write( "What is ||3u + 4v||?
\n" ); document.write( "My book gives the answer $\"sqrt%2837%29\"$ and I have the same result but I would like to know if I have done it correct. \n" ); document.write( "

Algebra.Com's Answer #813725 by robertb(5830) $\"\"$ $\"About$

You can put this solution on YOUR website!

, since u and v are unit vectors.\r
\n" ); document.write( "\n" ); document.write( "=

.\r
\n" ); document.write( "\n" ); document.write( "Hence $\"abs%283u+%2B+4v%29%5E2+=+37\"$ , which implies that $\"abs%283u%2B4v%29+=+sqrt%2837%29\"$ . \n" ); document.write( "

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