The angles can be used to work out what proportion of the whole population a pie chart sector represents. These fractions would be out of 360°, the number of degrees in a full turn. A pie chart ...

go into the calculator settings to change the angle unit to 'degrees' (or 'deg'). The aim is to find the value of Ɵ that makes cosƟ equal 16/32. A function takes an input and does something to ...