A basketball gymnasium is 25 meters high, 80 meters wide, and 200 meters long. For a half time stunt , the cheerleaders want to run two strings, one from each of the two corners above one basket to the diagonally opposite corners of the gym floor. What is the cosine of the angle made by the strings as they cross?
The Attempt at a Solution
So far I have interpreted the two strings as the vectors:
P1 = -80i + 200j + 25k
P2 = 80i +200j +25k
The magnitude of both the strings is √47025m2 ≈ 216.85m.
I'm just not sure the next step to take.