the autosum feature automatically adds number in the selected cells.
its is present in standard toolbar.
why is necessary to auto-save
Alt + +
A sum just means adding things up.
An angle sum is the sum (in degrees) of the particular angles you are measuring.
Because by definition, there sum will always be zero. Because the definition of opposites are additive inverses.
By definition, they must sum to 90 degrees.
The sum.
The AUTO SUM function is a feature in spreadsheet applications like Microsoft Excel and Google Sheets that automatically calculates the sum of a range of selected cells. It is typically represented by the sigma (Σ) symbol and can quickly add up numbers in rows or columns without needing to manually enter a formula. Users can activate AUTO SUM by selecting the cell where they want the result to appear and clicking the AUTO SUM button, which suggests a range to sum. This function enhances efficiency by simplifying the summation process.
By definition, the sum must be unity.
a3 + b3
Alt+=
the average, the sum