A boat is heading towards a lighthouse, where Riley is watching from a vertical distance of 120 feet above the water. Riley meas

Question

3 years ago

7

A boat is heading towards a lighthouse, where Riley is watching from a vertical distance of 120 feet above the water. Riley meas

ures an angle of depression to the boat at point A to be 18 degrees . At some later time , Riley takes another measurement and finds the angle of depression to the boat (now at point B) to be 65 degrees . Find the distance from point A to point B. Round your answer to the nearest foot if necessary .

Mathematics

1 answer:

creativ13 [48] · Answer 1 · 2022-07-01T05:28:30+03:00

creativ13 [48]3 years ago

4 0

Answer:

313 ft

Step-by-step explanation:

It's hard to explain because its geometry, but there will be a right triangle with angle of 72 and another with angle of 25. do tan72 * 120 - tan25 * 120