document.write( "Question 856550: Suppose that (5/13,y) is a point in Quadrant IV lying on the unit circle. Find y. Write the exact value not a decimal approximation \n" ); document.write( "

Algebra.Com's Answer #516023 by Fombitz(32388) $\"\"$ $\"About$

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Since it's on the unit circle,
\n" ); document.write( " $\"x%5E2%2By%5E2=1\"$
\n" ); document.write( " $\"%285%2F13%29%5E2%2By%5E2=1\"$
\n" ); document.write( " $\"25%2F169%2By%5E2=169%2F169\"$
\n" ); document.write( " $\"y%5E2=144%2F169\"$
\n" ); document.write( " $\"y=0+%2B-+12%2F13\"$
\n" ); document.write( "Since it's in Q4, it's the negative value.
\n" ); document.write( " $\"y=-12%2F13\"$
\n" ); document.write( " \n" ); document.write( "

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