What is the envelope of straight lines given by x cos b + y sin b = a sec b, where b is the parameter?
Posted: Thu Jul 14, 2022 9:29 am
a) y2 + 4a(a-x) = 0
b) y + 4ax = 0
c) y + 4a(a-x) = 0
d) y2 = 4a(a-x)
b) y + 4ax = 0
c) y + 4a(a-x) = 0
d) y2 = 4a(a-x)