wiz-icon
MyQuestionIcon
MyQuestionIcon
2
You visited us 2 times! Enjoying our articles? Unlock Full Access!
Question

lx+my+n=0 is a tangent line to the circle x2+y2=r2 if

A
l2+m2=n2r2
No worries! Weā€˜ve got your back. Try BYJUā€˜S free classes today!
B
l2+m2=n2+r2
No worries! Weā€˜ve got your back. Try BYJUā€˜S free classes today!
C
n2=r2(l2+m2)
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
None of these
No worries! Weā€˜ve got your back. Try BYJUā€˜S free classes today!
Open in App
Solution

The correct option is C n2=r2(l2+m2)
line is tangent if distance of line from center =r
l(0)+m(0)+nl2+m2=r
n2l2+m2=r2
n2=r2(l2+m2)

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Common Tangent to Two Circles
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon