use taxonomy terms as values for radio buttons by code
#options


values must be in array: http://api.drupal.org/api/drupal/developer!topics!forms_api_reference.html/7#options

example:

'#options' =&gt; array(
            0 =&gt; t('None'),
            1 =&gt; t('Team'),
            2 =&gt; t('Business'),
            3 =&gt; t('Talent'),
        ),