Find the value of `(i) ' sin ' ((31pi)/(3)) ' (ii) `' cos ' ((17pi)/(2)) '` ' (iii)

Find the value of `(i) " sin " ((31pi)/(3)) " (ii) `" cos " ((17pi)/(2)) "` " (iii) " tan " ((-25pi)/(3))` `(iv) " cot " ((13pi)/(4)) " " (v) " sec " ((-25pi)/(3)) " " (vi) " cosec " ((-41pi)/(4))`