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y = mx +c সরলরেখাটি

x^{2} + y^{2} = a^{2}

c = \pm a \sqrt{m^{2} - a}

c = \pm m \sqrt{a + m^{2}}

c = \pm m \sqrt{a - m^{2}}

c = \pm a \sqrt{1 + m^{2}}

ANS : 4

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