对上面的做个补充,三角函数只是在加减号改了个符号而已,其它的变化不大,比如:
三角函数及反三角函数
% --- Executes on button press in sin.
function sin_Callback(hObject, eventdata, handles)
global shift
if (shift==0)
result=sin(str2num(get(handles.text1,'string'))*pi/180);
set(handles.text1,'String',num2str(result));
else
result=asin(str2num(get(handles.text1,'string')))*180/pi;
set(handles.text1,'String',num2str(result));
end