If any two chords be drawn through two p...

If any two chords be drawn through two points on the major axis of an ellipse equidistant from the centre, show that `tan(alpha/2)* tan(beta/2) tan(gamma/2)tan(delta/2)=1`, where `alpha, beta, gamma, delta` are the eccentric angles of the .extremities of the chords.

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If any two chords be drawn through two points on the major axis of an ellipse equidistant from the centre, show that `tan(alpha/2)* tan(beta/2) *tan(gamma/2)*tan(delta/2)=1`, where `alpha, beta, gamma, delta` are the eccentric angles of the .extremities of the chords.

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If any two chords be drawn through two points on the major axis of an ellipse equidistant from the centre, show that `tan(alpha/2)* tan(beta/2) tan(gamma/2)tan(delta/2)=1`, where `alpha, beta, gamma, delta` are the eccentric angles of the .extremities of the chords.