This time i inserted the picture.

can someone me! it's law of cosines, and i'm having to use the formula but i do not know which side length is a, b and c. in the last question, i was given the angles and that's how i figured out which side length is which. all i'm given is two side lengths and an unlabeled angle. so me someone!

It is saturday morning and jeremy has discovered he has a leak coming from the water heater in his attic. since plumbers charge extra to come out on the weekends, jeremy is planning to use buckets to catch the dripping water. he places a bucket under the drip and steps outside to walk the dog. in half an hour the bucket is 1/5 of the way full. what is the rate at which the water is leaking per hour?