Note :
p is an irrational number
and hence may be expressed as an infinite non repeating decimal
number. On a calculator, the p button gives p rounded off usually
8 to10 significant digits and displaying : p
= 3.1415927 .....
(IV) A mil, is used in military science is defined as the
measure of the central angle subtended by an arc of a circle equal
to
of its circumference. The name is derived from the fact that, approximately
1 mil =
Since 6400 mils = 360^{0}, 1 mil =
and 1^{0} =

Index
1.1 Angles (Radians & Degrees)
1.2 Arc Length & Area of the circle
Supplementary Problems
Chapter 2
