Prove that 1-cosA/sinA+sinA/1-cosA=2cosA​

If a suspect is in possession of 20 grams of cocaine how many ounces does he possess what will the charge be

Arace is 10 kilometers long.markers will be placed at the beginning and end of the race course and at each 500 meter mark.how many markers are needed to mark the course for the race?

The accompanying data represent the miles per gallon of a random sample of cars with a three-cylinder, 1.0 liter engine. (a) compute the z-score corresponding to the individual who obtained 42.342.3 miles per gallon. interpret this result.