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<p class="Cell">The length of the subtangent (if exists) at any point θ on the ellipse <img src="data:image/png;base64,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" class="Wirisformula" alt="x squared over a squared minus y squared over b squared equals 1" width="98" height="42" style="vertical-align:-15px" role="math" data-mathml='«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mfrac»«msup»«mi»x«/mi»«mn»2«/mn»«/msup»«msup»«mi»a«/mi»«mn»2«/mn»«/msup»«/mfrac»«mo»§#8722;«/mo»«mfrac»«msup»«mi»y«/mi»«mn»2«/mn»«/msup»«msup»«mi»b«/mi»«mn»2«/mn»«/msup»«/mfrac»«mo»=«/mo»«mn»1«/mn»«/math»'/> is

Solution for the question - the length of the subtangent (if exists) at any point on the ellipse(x^(2))/(a^(2))-(y^(2))/(b^(2))=1 is asin^(2)thetasec theta a|sin theta cos theta|