document.write( "Question 1056289: if cosx=-12/13 and sin x>0, find tan(2x)
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #671445 by Magicmushroom(1)\"\" \"About 
You can put this solution on YOUR website!
if cosx=-12/13 and sin x>0, find tan(2x)
\n" ); document.write( "Take the arccosine:\r
\n" ); document.write( "\n" ); document.write( "\"%0D%0A+x=+arccosine+%28-12%2F13%29+%0D%0A\"
\n" ); document.write( "Plug in the value of x to find tan(2x)\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );