Question

prove that the tangent at any point of a circle is perpendicular to the radius through the point of contact. Using the above do the following: If o is the centre of two concentric circle ab is a chord of a large circle touching the smaller circle at c then prove that AC=BC

Answer 1

https://books.google.co.in/books?id=Y6X_CgAAQBAJ&pg=PA15&lpg=PA15&dq=Prove+that+the+tangent+at+any+p...

Answer 2

Answer:

very easy do you know I don't know nothing about this question