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

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.

Find the length which at a distance of 5280 m 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

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

A normal human cye can see an object making an angle of 1.8^(@) at the eye. What is the approximate height of object which can be seen by an eye placed at a distance of 1 m from the object.

The moon's distance from the earth is 360000 km and its diameter subtends an angle of 31' at the eye of the observer. Find the diameter of the moon.

Find the diameter of the sun in km supposing that it subtends an angle of 32 at the eye of an observer. Given that the distance of the sun is 91 x 106 km.

The moons distance from the earth is 360 , 000k m s and its diameter subtends an angle of 31 at the eye of the observer. Find the diameter of the moon.

The angle of elevation of the top of a tower from a point A on the ground is 30^0dot On moving a distance of 20 metres towards the foot of the tower to a point B the angle of elevation increases to 60^0dot Find the height of the ttower and the distance of the tower from the point A.