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2 r \sin^{2} \frac{θ}{2} = 1

এর কার্তেসীয় সমীকরণ -

y^{2} = 1 + 2 x

y^{2} = 4 (1 - x)

y^{2} = 4 (1 + x)

x^{2} = 4 (1 + y)

ANS : 1

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