Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • If tangents drawn from the point   to the hyperbola <img alt="\math

If tangents drawn from the point \mathrm{A(c, 4)}  to the hyperbola \mathrm{\frac{x^2}{81}-\frac{y^2}{49}=1}  are perpendicular, then the value of \mathrm{c^2} is

Option: 1

14


Option: 2

16


Option: 3

15


Option: 4

None of these


Answers (1)

best_answer

Since tangents drawn from the point \mathrm{A(c, 4)} are perpendicular, A must lie on the director circle \mathrm{x^2+y^2=32}. Putting \mathrm{y=4}, we get \mathrm{x^2=c^2=16}

Posted by

manish

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JAC Chandigarh Counselling 2025: Round 1 seat allotment result out for BTech admissions
anam-khan

JoSAA round 5 seat allotment result 2025 out on josaa.nic.in
anam-khan

BTech aspirant from north-east or UT? Apply for CSAB NEUT counselling 2025 today

Latest Question