Let A ≡ (- 2, 0) and B ≡ (2, 0), then the number of integral
values of a, a $\in$ for which line segment AB subtends an
acute angle at point C(a, a + 1) is
ekuk A ≡ (- 2, 0) rFkk B ≡ (2, 0) rc a $\in$ [-10, 10 fy, a ds
iw.kkZ±d ekuksa ftlds fy, AB fcUnq C(a, a + 1) ij
U;wudks.k vUrfjr djrh

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Point C(a, a + 1) must lie outside the circle x^2 + y^2 =

Source: Grass-G / M-27 Mathematics Paper 2 15 Jan.docx