An large advertising balloon is hovering over a football field. To maximize the number of people who can see the balloon, the balloon is supposed to hover at a height of 140 yards. In order to make sure that is the case, Anya and Bryan stand at opposite Ends of the football field 100 yards apart and observe the balloon. Anya finds the angle of elevation to the balloon is 73", while Bryan measures the angle of elevation to be 79. How much should the balloon be raised or lowered in order to be 140 yards up in the air