document.write( "Question 596130: Suppose That ((4)/(5),y) is a point in quadrant II lying on the unit circle.
\n" ); document.write( "find y write the exact value not a decimal approximation. \n" ); document.write( "

Algebra.Com's Answer #377530 by Alan3354(69443) $\"\"$ $\"About$

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Suppose That ((4)/(5),y) is a point in quadrant II lying on the unit circle.
\n" ); document.write( "find y write the exact value not a decimal approximation.
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\n" ); document.write( "You have unneeded parentheses.
\n" ); document.write( "(4/5,y), or (0.8,y) is on the unit circle in Q2.
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\n" ); document.write( " $\"0.8%5E2+%2B+y%5E2+=+1\"$ is the distance from the Origin, (0,0)
\n" ); document.write( " $\"y%5E2+=+1+-+0.64+=+0.36\"$
\n" ); document.write( "y = 0.6, or 3/5
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\n" ); document.write( "If x = +0.8, it can't be in Q2
\n" ); document.write( "The point is either (4/5,3/5) or (4/5,-3/5)
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