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Grade 12Vectors

Tell me the answer to question no A2. .............. Dot dot dot dot dot dot dot ...

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Profile image of mohit chamoli
8 Years agoGrade 12
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1 Answer

Profile image of Amit
8 Years ago
Consider. Vertex A to be at origin and hence position vector of B becomes 6i+3j+3k and C becomes 3i-3j+6k. Now use section formula . For D point ratio will be 2:1 and for D` ratio will be 1:2.The position vector for D and D` will be AD and AD`

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