document.write( "Question 337745: Find the rectangular equation of the curve whose parametric equations are: x=5cos 2t and y= -sin 2t, 0 =< t =< 180degrees \n" ); document.write( "
Algebra.Com's Answer #242141 by Fombitz(32388)\"\" \"About 
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\"x%5E2%2B25y%5E2=25\"
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