Q.

The angle of rotation of the axes so that the equation 3x−y+5=0 may be reduced to form y=constant is

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a

π3

b

π2

c

π6

d

π4

answer is A.

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Detailed Solution

3x−y+5=0;a=3,b=−1∴θ=tan−1−ab=tan−13=π3
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