An airship has an altitude of 800 m , in a distance, a village is seen with an angle of depression 12 °. Find the distance of the airship from the village..

Answer 1

review your basic trig function definitions. Draw a diagram, and you will see that

the line-of-sight distance x is given by

800/x = sin 12°

The distance along the ground is given by

800/x = tan 12°

Pick your case, and just solve for x.