If the line `l x+m y+n=0` touches the circle `x^2+y^2=a^2` , then prove that `(l^2+m^2)^2=n^2dot`

This is the Solution of Question From RD SHARMA book of CLASS 11 CHAPTER CONIC SECTIONS This Question is also available in R S AGGARWAL book of CLASS 11 You can Find Solution of All Question From RD SHARMA and R S AGGARWAL book from class 6-12 on our app DOUBTNUT for Free #rdsharmasolution #CONICSECTIONS #rdsharmaclass11 #class11 #cbse #rdsharma #doubtnut ==== QUESTION TEXT ==== If the line `l x+m y+n=0` touches the circle `x^2+y^2=a^2` , then prove that `(l^2+m^2)^2=n^2dot` === DOWNLOAD DOUBTNUT TO ASK ANY MATH QUESTION === https://doubtnut.app.link/aKc1CPlHlP ==== SCORE 100% WITH DOUBTNUT ==== Doubtnut App has video solutions of ALL the NCERT questions from Class 6 to 12 (including IIT JEE). You can also ask any Math question and get a video solution for FREE from a library of more than 1 Lakh Math Videos ==== FOLLOW US ON FACEBOOK ==== Doubtnut PAGE: / doubtnut DOUBTNUT IIT JEE Group: / 251747588948573 ==== WATCH DAILY LIVE CLASSES ON YOUTUBE ==== 5:30 PM - Class 9 6:30 PM - Class 10 7:15 PM - Class 11 8:15 PM - Class 12 9:15 PM - Class 13 (DROPPERS)

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