PQ and QR are two focal chords of an ellipse and the eccentric angles of P,Q,R are $2 α, 2 β, 2 γ$ , respectively then $tan β γ$ is equal to

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PQ and QR are two focal chords of an ellipse and the eccentric angles of P,Q,R are

2 α, 2 β, 2 γ

, respectively then

tan β γ

is equal to

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Question Text

PQ and QR are two focal chords of an ellipse and the eccentric angles of P,Q,R are

2 α, 2 β, 2 γ

, respectively then

tan β γ

is equal to

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