Which expressions can be used to find m angle ABC ? Choose two correct answers.
A
cosine inverse of open paren 9 point 8 over 6 point 3 close parenB
cosine inverse of open paren 7 point 5 over 9 point 8 close parenC
sine inverse of open paren 9 point 8 over 7 point 5 close parenD
sine inverse of open paren 7 point 5 over 9 point 8 close parenE
cosine inverse of open paren 6 point 3 over 9 point 8 close paren