what are secants?
A secant is a straight line that cuts the curve at 2 or more parts.
Refer the following link also :
https://www.meritnation.com/ask-answer/question/what-is-the-secant-theorem/circles/1536455
Refer the following link also :
https://www.meritnation.com/ask-answer/question/what-is-the-secant-theorem/circles/1536455