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Question

The coordinates of the foot of perpendicular drawn from the point (2,4) on the line x+y=1, are

A
(12,32)
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B
(12,32)
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C
(32,12)
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D
(12,32)
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Solution

The correct option is B (12,32)
Equation of line (x+y=1) and passing through (2,4) will be
y4=(x2)
xy+2=0(1)
So intersection of (1) with the given line will be foot of perpendicular of (2,4)
Hence foot of perpendicular will be (12,32)

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