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Curated by: Khan Academy India - English (6 videos)
https://www.khanacademy.org/math/ncert-class-10 We prove that the radius that connects the intersection point of a tangent line with the circle is perpendicular to the tangent line. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate