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A straight line passes through the point (2, –1, –1). It is parallel to the plane 4x + y + z + 2 = 0 and is perpendicular to the line
x/1=y/(-2) =(z-5)/1 Find the equations of the straight line ?
Dear Sagar,
Let direction cosines of straight line be l, m, n
then : 4l + m + n = 0
and for that of the given equation is
: l – 2m + n = 0
thus ,
l/3 = m/-3= n/-9 → l/-1=m/-3=n/3.
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