xny/vendor/phpoffice/phpspreadsheet/tests/data/Calculation/MathTrig/ACOS.php

<?php

return [
    ['exception', ''],
    ['#VALUE!', '"ABC"'],
    [M_PI_2, '0'],
    [M_PI, '"-1"'],
    [0, '1'],
    ['#NUM!', '2'],
    [M_PI_2, 'Q15'],
    [M_PI_2, 'false'],
    [0, 'true'],
    [1.047197551, 'A2'],
];