In Microsoft Excel, the SIGN number is a math and trigonometry function ... There are two other methods to use the SIGN function. Method one is to click the fx button on the top left of the ...

Again, all you need to do is put in an equals sign, and the ... in a certain currency. Math Notes understands the full set of trigonometry functions too, so you can use "sin," "cos," and "tan ...

Messages can solve simple math equations like "2+2=" by typing them into the text field. The app can also solve equations that use more complex formulas, such as the trigonometric functions of sine, ...