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28. If the points A(-1,3,2), B(-4,2,-4 C(5,5,lamnda) are collinear, find the valueSol. The equations of line passing thr |
| Answer» LET the points be A(−1,3,2)B(−4,2,−2)C(5,5,λ)Direction RATIO of AB=(−3,−1,−4)If A,B,C are collinear points then direction ratio of AB and BC must be proportional.Direction ratio of BC=(9,3,λ+2)∴9=α(−3)∴3=α(−1)∴λ+2=α(−4) and α=−3∴ −3λ+2 =−4∴λ=10Step-by-step EXPLANATION:please mark as brainliest | |