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The point P(alpha,alpha +1) will lie inside the triangle whose vertices are A(0,3), B(-2,0) and C(6,1) if |
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Answer» `alpha =- 1` Equation of AC is `X +3y - 9 =0` Equation of BC is `x - 8y +2 = 0` `P (alpha, alpha +1)` lies on the line `y = x +1` whichcuts BC at `D(-(6)/(7),(1)/(7))` and AC at `E ((3)/(2),(5)/(2))` `:. alpha` must lie between `-(6)/(7)`and `(3)/(2)`. |
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