At what distance does a man ,5`1/2` feet in height, subtend an angle of 20" ?

At what distance does a man 5 1/2 ft. in height, subtend an angle of 15" ?

At what distance does a man 5 1/2 ft. in height, subtend an angle of 15" ?

At what distance does a man, whose height is 2 metres, subtend an angle of 10’ ?

At what distance does a man whose height is 2 meters subtend angle of 10 '?

Find the length which at a distance of 5280 m will subtend an angle of 1' at the eye.

Find the length which at a distance of 5280m will subtend an angle of 1' at the eye.

A flagstaff stands vertically on a pillar, the height of the flagstaff being double the height of the pillar. A man on the ground at a distance finds that both the pillar and the flagstaff subtend equal angles at his eyes. The ratio of the height of the pillar and the distance of the man from the pillar is

A flagstaff stands vertically on a pillar, the height of the flagstaff being double the height of the pillar. A man on the ground at a distance finds that both the pillar and the flagstaff subtend equal angles at his eyes. The ratio of the height of the pillar and the distance of the man from the pillar is

A flagstaff stands vertically on a pillar,the height of the flagstaff being double the height of the pillar.A man on the ground at a distance finds that both the pillar and the flagstaff subtend equal angles at his eyes.The ratio of the height of the pillar and the distance of the man from the pillar is