Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The length of the latus rectum of the parabola whose focus is 
and directrix is ,y = 
, is
A
cos 2 α
B
cos2 α
C
cos2 α
D
cos 2 α
Text Solution
Verified by ExpertsThe correct answer is:
D
Since, focus is 
and directrix is y = 
, therefore, equation of the parabola is
y = xtan α – 
= 
⇒ 
∴ Length of the latus rectum is 
cos 2 α .
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