A boat is heading towards a lighthouse, whose beacon-light is 121 feet above the water. From point A, the boat’s crew measures the angle of elevation to the beacon 5, before they draw closer. They measure the angle of elevation a second time from point BB at some later time to be 10. Find the distance from point A to point B. Round your answer to the nearest foot if necessary.

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem