From angular's FAQ page
What browsers does Angular work with? We run our extensive test suite against the following browsers: Safari, Chrome, Firefox, Opera, IE8, IE9 and mobile browsers (Android, Chrome Mobile, iOS Safari). See Internet Explorer Compatibility for more details in supporting legacy IE browsers.
And the IE specifics cab be found here
If you'r looking for a angular.is_this_browser_supported()
function, i doubt you'll find any.