document.write( "Question 857597: if sin theta = - 5/13 and theta lies in quadrant 4 what is the value of cos theta \n" ); document.write( "

Algebra.Com's Answer #516662 by josmiceli(19441) $\"\"$ $\"About$

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In quadrant 4, the sin is negative
\n" ); document.write( "and the cos is positive
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\n" ); document.write( " $\"+cos%28+theta+%29+=+sqrt%28+13%5E2+-+5%5E2+%29+%2F+13+\"$
\n" ); document.write( " $\"+cos%28+theta+%29+=+sqrt%28+169+-+25+%29+%2F+13+\"$
\n" ); document.write( " $\"+cos%28+theta+%29+=+sqrt%28+144+%29+%2F+13+\"$
\n" ); document.write( " $\"+cos%28+theta+%29+=+12%2F13+\"$
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