Equation of a Tangent Plane to a Sphere and Condition of Tangency. Lect. 7. #sphere

Analytical Solid Geometry: The Sphere: Equation of a Tangent Plane to a Sphere and Condition of Tangency. In this lecture first a condition that a line is to be tangent to a sphere is obtained. Then equation of a tangent plane is obtained. The condition for a line or a plane to be tangent to a Sphere is obtained which is: The perpendicular distance of the line or the plane from the centre of the sphere is equal to the radius of the sphere. The book followed is Shanti Narayan: Analytical Solid Geometry Link for the handwritten notes on the chapter The Sphere: ( send a request mail, I will share it with you) https://drive.google.com/file/d/116xJ...