The line joining the points A(2,0) and B(3,1) is rotated through an angle of 450, about A in the anticlock wise direction. The coordinates of B in the new position
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a
(2,2)
b
(2,2)
c
(2,2)
d
(2,2)
answer is A.
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Detailed Solution
AB=1+1=2slope of AB is m=1-03-2=1 tanθ=1⇒θ=450 then rotation ofm line is 900 ∴ by distance, verification the new coordinates of B are (2,2)