Which unit of measure would be appropriate for the area of a soccer field that is 105 meters long and 67 meters wide

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .