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Question : 32 of 160
Marks:
+1,
-0
Solution:
The length of altitude drawn from A is given by,
h= AB=−2i+j+k AC=−i+2j−k BC=i+j−2k So AB×AC=|| =i(−1−2)−j(2+1)+k(−4+1) =−3i−3j−3k This implies,
AB×AC|=3√3 And,
||=√6 Then
h= =
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