A fair number cube, numbered from 1 to 6, is rolled. What is the probability that the number is some number other than 6?
2 answers:
You might be interested in
Use inverse cosine here because you have the side adjacent to angle A and the hypotenuse. On your calculator, press the 2nd key then cosine to see this on your display 
then enter 8/17 to give you an angle measure of 62 degrees.