Mathematics · Conic Sections
Let P(a sec θ, b tan θ) and Q(a sec φ, b tan φ) where θ + φ = π2 be two points on the hyperbola x2a2 - y2b2 = 1. If the ordinate of the point of intersection of normals at P and Q is -k(a2 + b2a), then the value of k is:
- 13
- 21/2
- 32
- 41✓
Correct answer
1
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