Maxima and MinimaHard

Question

P and Q are two points on a circle of centre C and radius α, the angle PCQ being 2θ then the radius of the circle inscribed the triangle CPQ is maximum when -

Options

A.sin θ =
B.sin θ =
C.sin θ =
D.sin θ =

Solution


s = = α (1+sin θ)
ᐃ = α2 sin 2θ
r =
Maximize ′r′.

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