NEED HELP NOW AND WILL GIVE BRAINLIEST Find an exact value.
sine of seventeen pi divided by twelve.

quantity square root of six minus square root of two divided by four.
quantity negative square root of six minus square root of two divided by four.
quantity square root of six plus square root of two divided by four.
quantity square root of two minus square root of six divided by four.

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?