(2) I'm going to be posting a lot of things so if you're really good just stay tuned

Find the value of the cosine for angle a

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number

Hi, can anyone show me how to do this problem? 100 points for this. in advance