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

In the circle of 5cm.radius, what is the length of the are which subtends and angle of 33^(@)15' at the centre.

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

Assuming that a person of normal sight can read print at such a distance that the letters subtend an angle of 5' at his eye. Find what is the height of the letters that he can read at a distance of 756 meteres ?

Assuming that a person of normal sight can red print to such distance that the letters subtend and angle of 5 at his eye,find is the height of the letters that he can read at a distance of 12 metres.

A vertical tower subtends an angle of 60^(@) at a point on the same level as the foot of the tower. On moving 100 m further in line with the tower, it subtends an angle of 30^(@) at the point. Then, the height of the tower, it subtends an angle of 30^(@) at the point. Then, the height of the tower is