Theorem : A circle with centre O in which AB subtends 𢈊OB at centre and angle � at any point on the remaining part of the circle. R.T.P. – 𢈊OB = 2 x � Solution : Construction: Join CO and produce CO to point D . 1. In ∆AOC, OC = OA || Radii of … Read more
The concept of the calender originated from solar year. The earth completes its orbit about the sun in 365 days 5 hr 48 min 46 sec.This is called solar year. Total Number of months in a year = 12Total Number of days in a year = 365Total Number of days in a leap year = … Read more
Unitary means “of one” . Mathematically it means “1”. To know this in an easy way, I am writing few examples. Question 1: If the cost of one pen is Rs 2 . Find the cost of 25 Pens Question 2: If the cost of 50 pencils is Rs 500. oo . Find the cost … Read more
The most important thing about this chapter is that the sums are very easy and can be solved by most of the students if the formula is known to him. Also it is more important to keep in memory the formula of speed, distance and time. The third most important point to note is the … Read more