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Agniveer Vayu or IAF Group X 12 July 2021 Shift 3 Paper

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Question : 48

Total: 70

If the line y = mx + c is a tangent to the circle x2 + y2 = a² then find condition of tangency ?

c2 = a2 (1 + m²)
c2 = - a2 (1 + m²)
Both 1 and 2
None of these

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