Theorem : Opposite Angles of a Cyclic Quadrilateral are Supplementary. Solution : Given: ABCD is a cyclic quadrilateral.R.T.P.(Require To Prove) 1. � + � = 1800 2. � + � = 1800 Construction : Join OB and OD Proof: 1. ∠ BOD = 2 ∠BAD || Angle at the centre of a circle is … Read more
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
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