# Mathematics

## centre of gravity of the sector of a circle

Find the centre of gravity of the sector of a circle subtending an angle 2α at the centre of the circle? Ans: To find centre of gravity of the sector of a circle first draw the figure AOB is the sector of the circle subtending an angle 2α at the centre. Ox is the bisector of …

## Football player kicks a ball

Let us know what happens when football player kicks a ball. In this post we understand all component which affects the best play in a football match by Physics laws by an example. When player kicks a ball with an Example A football player kicks a ball at angle of 37⁰ to the horizontal with an …

## logarithm

What is logarithm? The term logarithm is basically derived from two words, “logas” and “arithmos”. Logas implies ratio while arithmos means number. The logarithm of any number to a given base is the power to which the base must be raised to obtain that number. Foe example, we know that 2 raised to power 5 …

## Coordinates of the point which divides in a given ratio

To find the coordinates of the point which divides in a given ratio (m1 : m2) the line joining two given points (x1, y1) and (x2, y2). Let P1 be the point (x1, y1) , P2 be the point (x2, y2) and P be the required point, so that we have P1P: PP2 :: m1 …