The Newton Raphson method is also called as ____________a)Diameter methodb)Chord methodc)Secant methodd)Tangent method

The Newton-Raphson method is also called the Tangent method. This method is used for finding successively better approximations to the roots (or zeroes) of a real-valued function. The method is based on the idea of linear approximation and utilizes the tangent line at a given point on the function to approximate the roots.

Here's a brief explanation of why it’s called the Tangent method: when you want to find the root of a function $f(x)$, you start with an initial guess $x_0$. The tangent line to $f(x)$ at $x_0$ intersects the x-axis at a new point $x_1$. This point serves as a better approximation of the root. You continue this process iteratively to converge closer to the actual root.

Therefore, the correct choice is:

d) Tangent method.