document.write( "Question 1064117: If x/a cos theta= y/b sin theta and ax/cos theta - by/ sin theta =a^2 – b^2 show that x^2/a^2 +y^2/b^2 =1\r
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Algebra.Com's Answer #679199 by ikleyn(52803) $\"\"$ $\"About$

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\n" ); document.write( "If x/a cos theta= y/b sin theta and ax/cos theta - by/ sin theta =a^2 – b^2 show that x^2/a^2 +y^2/b^2 =1
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document.write( "From   =  express \r\n" );
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document.write( " =   =  and substitute it into the second equality.\r\n" );
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