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AP and TS EAMCET Engineering Model Paper 14
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© examsnet.com
Question : 27
Total: 159
The foot of the perpendicular from (1, 2, 3) to the line joining the points (6, 7, 7) and (9, 9, 5) is
(5, 3, 9)
(3, 5, 9)
(3, 9, 5)
(3, 9, 9)
Validate
Solution:
The parametric pt on line joining A (6,7,7) and B(9, 9, 5) is Q
(
6
+
3
t
,
7
+
2
t
,
72
t
)
, P
(
1
,
2
,
3
)
Let Q be foot of P. Then
AB
⊥
PQ
we get t = 1
foot = Q = (3, 5, 9)
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