The line $12x\cos \theta + 5y\sin \theta = 60$ is tangent to which of the following curves?
Solution
$12x\cos \theta + 5y\sin \theta = 60$<br><br>${{x\cos \theta } \over 5} + {{y\sin \theta } \over {12}} = 1$<br><br>is tangent to ${{{x^2}} \over {25}} + {{{y^2}} \over {144}} = 1$<br><br>$144{x^2} + 25{y^2} = 3600$
About this question
Subject: Mathematics · Chapter: Conic Sections · Topic: Parabola
This question is part of PrepWiser's free JEE Main question bank. 146 more solved questions on Conic Sections are available — start with the harder ones if your accuracy is >70%.