Barbie and Ken live in separate apartments in the same high-rise building with a view of the lake. The floor that Ken lives on is 504 feet above Barbie's floor. Ken hires a skywriter to fly over the lake to write a marriage proposal to Barbie. When the skywriter is 800 feet east of the building. Ken calls Barbie and tells her to look out her window. From Ken's apartment, the angle of depression to the skywriter is 20°. Determine the angle of elevation from which Barbie views the skywriter from her apartment. Round to the nearest thousandth ​