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.

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.

Revise how to identify the y-intercept, turning point and axis of symmetry of a quadratic function. BBC Bitesize Scotland revision for SQA National 5 Maths.

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