HyperbolaMedium
Question
If the tangent at the point P(α sec α, b tan a) to the hyperbola 
= 1 meets its transverse axis at T, then ST (S focus) must be equal to
= 1 meets its transverse axis at T, then ST (S focus) must be equal toOptions
A.a(e − cos α)
B.b(e + cos α)
C.a(e + cos α)
D.
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