Q.
The angle of rotation of the axes so that the equation ax + by + c = 0 may be reduced to X = p is
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a
tan−1ba
b
tan−1ab
c
π2
d
π3
answer is A.
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Detailed Solution
a(Xcosθ−Ysinθ)+b(Xsinθ+Ycosθ)+c=0coefficient of Y = 0
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