Q. 44.8( 5 Votes )
Find the equation of the straight line at a distance of 3 units from the origin such that the perpendicular from the origin to the line makes an angle α given by 
with the positive direction of x–axis.
Answer :
Given: p = 3, 
⇒ 
and 
Concept Used:
The equation of a line in normal form.
Explanation:
So, the equation of the line in normal form is
Formula Used: x cos α + y sin α = p
⇒ 
⇒ 12x + 5y = 39
Hence, the equation of line in normal form is 12x + 5y = 39
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