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Add solve equationn

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Lyn Perrine 2025-03-04 13:29:37 -08:00
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source/2/2.4/2.4.3/Qalculate.rst
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@ -33,6 +33,8 @@ To test an test if two things are equal you can type :kbd:`=` between two expres
To select the general keypad left click the 10 numbers :menuuselection:`Keypad --> General`. To switch to a programming Keypad left click the 10 numbers :menuselection:`Keypad --> Programming`. To switch to an Algebra keypad left click the 10 dots :menuselection:`Keypad --> Algebra`. To have a custom keypad left click the 10 digits :menuselection:`Keypad --> Custom`. To add something to your custom keypad right click on an empty button. To toggle having no keypad press :kbd:`Control +K` or left click :menuselection:`Keypad --> None`. To hide the numberpad buttons uncheck the :menuselection:`Keypad --> Always show numberpad`. To just have the numberpad when not always shown select :menuselection:`Keypad --> Numberpad`.
To have Qalculate! solve an equation type :kbd:`Solve()` or long click on :menuselection:`x= --> Solve Equation`.
Trigonometry
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Qalculate! offers many different trigonometric functions. When using these functions having the correct angle unit is important to have the angle unit set correctly or else you will get the wrong answer. To set the angle unit to degrees left click the left most button with two sliders and select :menuselection:`Degrees` in which 360 degrees make one full circle. To set the angle unit to radians in which 2π radians make one full circle left click the left most button on the toolbar and select :menuselection:`Radians`. To have the angle unit set to Gradians in which 400 gradians make a full circle left the leftmost button on the toolbar and select :menuselection:`Gradians`.