Question

for a person standing at a distance of 80 cm from a church the angle of elevation of its top is of measui 45 degree find the height of the church

Answer 1

See the attached file

Answer 2

as the person is standing 80 cm away from church and angle of elevation from top is 45 degree then the remaining angle will be 90° (angle of church on ground) and 45°(remaining angle) since the distance of person from church is 80cm the height of church will be 80cm (side opp to equal angles).