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If line lx+my+n=0 cuts the ellipse x2a2+y2b2=1 at points whose eccentric angles differ by π2, then the value of a2l2+b2m2n2 is |
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Answer» If line lx+my+n=0 cuts the ellipse x2a2+y2b2=1 at points whose eccentric angles differ by π2, then the value of a2l2+b2m2n2 is |
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