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In this video, we will revise the topic CIRCLES.

I will start the topic by discussing the equation of circle in different forms. We will discuss – Finding centre and radius of circle if the equation is given, Equation of circle with centre and radius given, Equation of circle whose end points of diameter is given, Equation of Circle with coordinate axes, Length of x-intercept made by a circle, Length of y-intercept made by a circle, Equation of circle passing through two given points having least area / radius / perimeter.

Next, we will discuss topics related to a point and a circle. What are the conditions that needs to be applied if the point lies inside the circle, on the circle or outside the circle. We will also discuss how to find the maximum or minimum distance of a point from a circle.

Next discussion will be related to equation of tangent to a circle. First topic is, what is the condition to be applied given a line is tangent to a circle or line is chord to a circle – slope form of tangent. How to find the equation of a tangent, point of contact on circle is given i.e. point form of tangent. How to find the locus of point of intersection of two perpendicular tangents i.e. Director Circle. What is the formula to find the length of tangent from an external point to the circle. How to find the angle between tangents drawn from the external point. How to find the equation of the circle circumscribing the triangle formed by pair of tangents and the chord of contact. How to find the area of the triangle formed by pair of tangents and the chord of contact. How to find the length and equation of the chord of contact to a circle. Formula to find the equation of pair of tangents to the circle. How to find the equation of chord with middle point given and equation of normal to the circle.

Next, we will discuss different cases related to two circle. What are the conditions that needs to be applied given two circles; neither touches nor intersect each other, touches each other externally, intersect each other, touches each other internally, one circle is inside the other. We will also discuss number of common tangents in each cases. How to find the length of external or direct common tangent and the length of internal or transverse common tangent.

Next is equation of common chord and common tangent to two given circles. We will also discuss the condition such that two given circle intersect each other orthogonally i.e. tangents at their point of intersection include a right angle. At last, we will discuss different cases of family of circles – Circle Through Point Of Intersection Of Two Given Circles, Circle Through Point Of Intersection Of A Circle & A Line, Circle Through 2 Given Points A (x_1,y_1) and B(x_2,y_2), Circle Touches A Fixed Line L=0 At The Point (x_1,y_1).

By – Nitesh Choudhary

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Some Other Important Links are given below:

Mathematical Reasoning IIT JEE Lectures Playlist Link

Statistics IIT JEE Lectures Playlist Link

Sum of Series IIT JEE Concepts Playlist Link

Permutation and Combination IIT JEE Concepts Playlist Link

Binomial Theorem IIT JEE Concepts Playlist Link

Complex Numbers Maximum and Minimum Value IIT JEE Concepts Playlist Link

Physics Formulae Revision Playlist Link

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thank you sir

Plz upload balance topics of physics today sir…. ?

how many videos ur targeting to complete before jee mains

sir videos r excellent

????

very nice sir….pls upload conic section also….

Love it

thankyou sir,please upload conic section videos

please make a video on locus also and parabola ,please

Sir, should I solve questions of tangents using parametric formula or slope form ?

Once again an extraordinary effort on your part , damn nice !

very helpful sir , thanks alot

thanks a lot

conic section plzz

Mathematics of Coachengg is the best in india

i think

The quality of explaining is awesome

sir properties of triangle and binomial theorem and sequence and series plz…….

Awesome really Plz make one video on circles discussing difficult problems

as concepts are discussed

now questions should be posted

awesome and thank you

thank u sir

sir aprox how many chapters u will upload till jee mains??

Extremely helpful!

Sir, I have a doubt in coordination reactions, where can I email you that?

more similar video

sir please upload a video on straight line

sir straight line ki video aaj hi upload kr do please sir please

plz provide proper notes on conic section accordingly jee main

these videos r very helpful for last moment quick revision thanks to provide us a quality of stuff

sir limits bhi kar diyo

thankyou sir feel aa gya

?????????????????????????????????????????????????……..upto INFINITY

Sir please do class rest Physics & Chem… please…

It will be useful for both JEE & NEET…..

sir abb parabola ellipse bhi kar do plz???

sir please! also upload rest of the chapters from conic before mains

will this be enough for jee mains ???

sir 2n+1/(n+1)(n+3) ka sum kaise karenge isme to difference rule bhi apply nhi ho rha h sir plz reply me

sir straight lines aur baki conic section ka video v upload kar digiye plzz sir only one week left

sir past years question bhi topic bhi topic ka jo easily scoring h

Sir it would be very helpful if you provide quick revision for conic section also.

plz upolad conic and straight lines

Just mind blowing!!

gazab sir, complex bhi krwado Na ese hi

thnk u sir your videos are very helpful for revision pls upload a Video for conic section and 3 d too as soon as possible

sir this is Osm…plz make videos on other chapters like this. sir , plz also make video on straight line .

plzz Sir ellipse ka video upload kar dijiye.

sor make more videos on bitsat

Sir i had a doubt in the following question pls help me out, pls reply

Let C be the circle centered at (1,1) and radius =1. If T is the circle centered at (0,y) passing through origin and touching the circle C externally, then the radius of T is equal to?

this was really helpful. Thanks a lot to your channel. pls make more such videos before jee mains this week .

nice vdo

Sir please upload one video on 3D geometry

fuck this was best …i mean i never wanted to cover circle for jee mains as i thought it is a huge topic but this video helped alot…keep doing the great work sir..god bless you