TS EAMCET 2016 Code A Solved Paper

Section: Mathematics
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Question : 58 of 160
 
Marks: +1, -0
Let A(2secθ,3tanθ) and B(2secϕ,3tanϕ), where θ+ϕ=
π
2
be two points on the hyperbola
x2
4
y2
9
=1
.If (α,β) is the point of intersection of normals to the hyperbola at A and B then β=
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