Which equation can be used to find the measure of angle LKJ ?
A
cosine inverse of open paren 8 point 9 over 10 point 9 close paren is equal to xB
sine inverse of open paren 8 point 9 over 10 point 9 close paren is equal to xC
cosine inverse of open paren 10 point 9 over 8 point 9 close paren is equal to xD
sine inverse of open paren 10 point 9 over 8 point 9 close paren is equal to x