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Q.

The distance between the two points A and A' which lie on y = 2 such that both the line segments AB and A' B (where B is the point (2,3)) subtend angle π4 at the origin, is equal to :

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a

10

b

485

c

3

d

525

answer is C.

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Detailed Solution

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m1=32 m2=2xtan⁡π/4=32−2x1+32×2x=1⇒x1=10, x2=−25⇒AA1=10+25=525Question Image

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