Finding roots graphically When the graph of y = a x 2 + b x + c is drawn, the solutions to the equation are the values of the x-coordinates of the points where the graph crosses the x -axis.

Verify that the corresponding cell number appears in the Number window within the Function Argument window. Convert the degree values to radians to ensure proper calculation of the tangent values.

Find the data you need in an Excel sheet more easily with these functions.

Excel provides a range of automated functions for working with these stored data values, including the chart function.