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.

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 ?

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

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.

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 91xx106km.

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

A short sighted person can see objects most distinctly at a distance of 16 cm. If he wears spectacles at a distance of 1 cm from the eye, then their focal length to see distinctly at a distance of 26 cm